---
_id: '17771'
abstract:
- lang: eng
text: Cold dark matter (CDM) hierarchical structure formation models predict the
existence of large-scale accretion shocks between the virial and turnaround radii
of clusters of galaxies. Kocsis et al. suggest that the Sunyaev–Zel'dovich signal
associated with such shocks might be observable with the next generation radio
interferometer, ALMA (Atacama Large Millimeter Array). We study the three-dimensional
distribution of accretion shocks around individual clusters of galaxies drawn
from adaptive mesh refinement (AMR) and smoothed particle hydrodynamics simulations
of ΛCDM (dark energy dominated CDM) models. In relaxed clusters, we find two distinct
sets of shocks. One set ("virial shocks"), with Mach numbers of 2.5–4, is located
at radii 0.9–1.3 Rvir, where Rvir is the spherical infall estimate of the virial
radius, covering about 40%–50% of the total surface area around clusters at these
radii. Another set of stronger shocks ("external shocks") is located farther out,
at about 3 Rvir, with large Mach numbers (≈100), covering about 40%–60% of the
surface area. We simulate SZ surface brightness maps of relaxed massive galaxy
clusters drawn from high-resolution AMR runs, and conclude that ALMA should be
capable of detecting the virial shocks in massive clusters of galaxies. More simulations
are needed to improve estimates of astrophysical noise and to determine optimal
observational strategies.
article_processing_charge: No
article_type: original
author:
- first_name: Sandor M.
full_name: Molnar, Sandor M.
last_name: Molnar
- first_name: Nathan
full_name: Hearn, Nathan
last_name: Hearn
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Greg
full_name: Bryan, Greg
last_name: Bryan
- first_name: August E.
full_name: Evrard, August E.
last_name: Evrard
- first_name: George
full_name: Lake, George
last_name: Lake
citation:
ama: Molnar SM, Hearn N, Haiman Z, Bryan G, Evrard AE, Lake G. Accretion shocks
in clusters of galaxies and their SZ signature from cosmological simulations.
The Astrophysical Journal. 2009;696(2):1640-1656. doi:10.1088/0004-637x/696/2/1640
apa: Molnar, S. M., Hearn, N., Haiman, Z., Bryan, G., Evrard, A. E., & Lake,
G. (2009). Accretion shocks in clusters of galaxies and their SZ signature from
cosmological simulations. The Astrophysical Journal. American Astronomical
Society. https://doi.org/10.1088/0004-637x/696/2/1640
chicago: Molnar, Sandor M., Nathan Hearn, Zoltán Haiman, Greg Bryan, August E. Evrard,
and George Lake. “Accretion Shocks in Clusters of Galaxies and Their SZ Signature
from Cosmological Simulations.” The Astrophysical Journal. American Astronomical
Society, 2009. https://doi.org/10.1088/0004-637x/696/2/1640.
ieee: S. M. Molnar, N. Hearn, Z. Haiman, G. Bryan, A. E. Evrard, and G. Lake, “Accretion
shocks in clusters of galaxies and their SZ signature from cosmological simulations,”
The Astrophysical Journal, vol. 696, no. 2. American Astronomical Society,
pp. 1640–1656, 2009.
ista: Molnar SM, Hearn N, Haiman Z, Bryan G, Evrard AE, Lake G. 2009. Accretion
shocks in clusters of galaxies and their SZ signature from cosmological simulations.
The Astrophysical Journal. 696(2), 1640–1656.
mla: Molnar, Sandor M., et al. “Accretion Shocks in Clusters of Galaxies and Their
SZ Signature from Cosmological Simulations.” The Astrophysical Journal,
vol. 696, no. 2, American Astronomical Society, 2009, pp. 1640–56, doi:10.1088/0004-637x/696/2/1640.
short: S.M. Molnar, N. Hearn, Z. Haiman, G. Bryan, A.E. Evrard, G. Lake, The Astrophysical
Journal 696 (2009) 1640–1656.
date_created: 2024-09-06T10:01:31Z
date_published: 2009-05-10T00:00:00Z
date_updated: 2024-09-30T09:59:02Z
day: '10'
doi: 10.1088/0004-637x/696/2/1640
extern: '1'
intvolume: ' 696'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1088/0004-637x/696/2/1640
month: '05'
oa: 1
oa_version: Published Version
page: 1640-1656
publication: The Astrophysical Journal
publication_identifier:
issn:
- 0004-637X
- 1538-4357
publication_status: published
publisher: American Astronomical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Accretion shocks in clusters of galaxies and their SZ signature from cosmological
simulations
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 696
year: '2009'
...
---
_id: '17772'
abstract:
- lang: eng
text: We utilize the local velocity dispersion function (VDF) of spheroids, together
with their inferred age distributions, to predict the VDF at higher redshifts
(0 < z lsim 6), under the assumption that (1) most of the stars in each nearby
spheroid formed in a single episode and, (2) the velocity dispersion σ remained
nearly constant afterward. We assume further that a supermassive BH forms concurrently
with the stars, and within ±1 Gyr of the formation of the potential well of the
spheroid, and that the relation between the mass of the BH and host velocity dispersion
maintains the form M BH vprop σβ with β ≈ 4, but with the normalization allowed
to evolve with redshift as vprop(1 + z)α. We compute the BH mass function associated
with the VDF at each redshift, and compare the accumulated total BH mass density
with that inferred from the integrated quasar luminosity function (LF; the so-called
Sołtan argument). This comparison is insensitive to the assumed duty cycle or
Eddington ratio of quasar activity, and we find that the match between the two
BH mass densities favors a relatively mild redshift evolution, with α ~ 0.33,
with a positive evolution as strong as α gsim 1.3 excluded at more than 99% confidence
level. A direct match between the characteristic BH mass in the VDF-based and
quasar LF-based BH mass functions also yields a mean Eddington ratio of λ ~ 0.5-1
that is roughly constant within 0 lsim z lsim 3. A strong positive evolution in
the M BH-σ relation is still allowed by the data if galaxies increase, on average,
their velocity dispersions since the moment of formation due to dissipative processes.
If we assume that the mean velocity dispersion of the host galaxies evolves as
σ(z) = σ(0) × (1 + z)-γ, we find a lower limit of γ gsim 0.23 for α gsim 1.5.
The latter estimate represents an interesting constraint for galaxy evolution
models and can be tested through hydro simulations. This dissipative model, however,
also implies a decreasing λ at higher z, at variance with several independent
studies.
article_processing_charge: No
article_type: original
author:
- first_name: Francesco
full_name: Shankar, Francesco
last_name: Shankar
- first_name: Mariangela
full_name: Bernardi, Mariangela
last_name: Bernardi
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
citation:
ama: Shankar F, Bernardi M, Haiman Z. The evolution of the mbh-σ relation inferred
from the age distribution of local early-type galaxies and active galactic nuclei
evolution. The Astrophysical Journal. 2009;694(2):867-878. doi:10.1088/0004-637x/694/2/867
apa: Shankar, F., Bernardi, M., & Haiman, Z. (2009). The evolution of the mbh-σ
relation inferred from the age distribution of local early-type galaxies and active
galactic nuclei evolution. The Astrophysical Journal. American Astronomical
Society. https://doi.org/10.1088/0004-637x/694/2/867
chicago: Shankar, Francesco, Mariangela Bernardi, and Zoltán Haiman. “The Evolution
of the Mbh-σ Relation Inferred from the Age Distribution of Local Early-Type Galaxies
and Active Galactic Nuclei Evolution.” The Astrophysical Journal. American
Astronomical Society, 2009. https://doi.org/10.1088/0004-637x/694/2/867.
ieee: F. Shankar, M. Bernardi, and Z. Haiman, “The evolution of the mbh-σ relation
inferred from the age distribution of local early-type galaxies and active galactic
nuclei evolution,” The Astrophysical Journal, vol. 694, no. 2. American
Astronomical Society, pp. 867–878, 2009.
ista: Shankar F, Bernardi M, Haiman Z. 2009. The evolution of the mbh-σ relation
inferred from the age distribution of local early-type galaxies and active galactic
nuclei evolution. The Astrophysical Journal. 694(2), 867–878.
mla: Shankar, Francesco, et al. “The Evolution of the Mbh-σ Relation Inferred from
the Age Distribution of Local Early-Type Galaxies and Active Galactic Nuclei Evolution.”
The Astrophysical Journal, vol. 694, no. 2, American Astronomical Society,
2009, pp. 867–78, doi:10.1088/0004-637x/694/2/867.
short: F. Shankar, M. Bernardi, Z. Haiman, The Astrophysical Journal 694 (2009)
867–878.
date_created: 2024-09-06T10:02:08Z
date_published: 2009-03-20T00:00:00Z
date_updated: 2024-09-30T10:55:28Z
day: '20'
doi: 10.1088/0004-637x/694/2/867
extern: '1'
intvolume: ' 694'
issue: '2'
language:
- iso: eng
main_file_link:
- url: https://doi.org/10.1088/0004-637x/694/2/867
month: '03'
oa_version: Published Version
page: 867-878
publication: The Astrophysical Journal
publication_identifier:
issn:
- 0004-637X
- 1538-4357
publication_status: published
publisher: American Astronomical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: The evolution of the mbh-σ relation inferred from the age distribution of local
early-type galaxies and active galactic nuclei evolution
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 694
year: '2009'
...
---
_id: '17782'
abstract:
- lang: eng
text: Ultraviolet (UV) radiation from early astrophysical sources could have a large
impact on subsequent star formation in nearby protogalaxies, and in general on
the progress of cosmological reionization. Theoretical arguments based on the
absence of metals in the early Universe suggest that the first stars were likely
massive, bright, yet short-lived, with lifetimes of a few million years. Here
we study the radiative feedback arising from such stars using hydrodynamical simulations
with transient UV backgrounds (UVBs) and persistent Lyman–Werner backgrounds (LWBs)
of varying intensity. We extend our prior work in Mesinger et al., by studying
a more typical region whose protogalaxies form at lower redshifts, z∼ 13–20, in
the epoch likely preceding the bulk of reionization. We confirm our previous results
that feedback in the relic H ii regions resulting from such transient radiation
is itself transient. Feedback effects dwindle away after ∼30 per cent of the Hubble
time, and the same critical specific intensity of JUV∼ 0.1 × 10^−21 erg s^−1 cm^−2
Hz^−1 sr^−1 separates positive and negative feedback regimes. This suggests that
overall feedback is fairly insensitive to the large-scale environment, overdensity
and redshift-dependent halo parameters, and can accurately be modelled in this
regime with just the intensity of the impinging UVB. Additionally, we discover
a second episode of eventual positive feedback in haloes which have not yet collapsed
when their progenitor regions were exposed to the transient UVB. When exposed
to the transient UVB, this gas suffers relatively little density depletion but
a significant enhancement of the molecular hydrogen abundance, thus resulting
in net positive feedback. This eventual positive feedback appears in all runs,
regardless of the strength of the UVB. However, this feedback regime is very sensitive
to the presence of Lyman–Werner radiation, and notable effects disappear under
fairly modest background intensities of JLW≳ 10^−3× 10^−21 erg s^−1 cm^−2 Hz^−1
sr^−1, assuming the region is optically thin for LW photons. Nevertheless, when
exposed to the same LWB, haloes inside relic H ii regions always have a higher
H2 abundance and shorter cooling times than haloes outside relic H ii regions,
allowing gas to cool faster once it finally begins to collapse on to the halo.
We conclude that UV radiative feedback in relic H ii regions, although a complicated
process, seems unlikely to have a major impact on the progress of cosmological
reionization, provided that present estimates of the lifetime and luminosity of
a Population III star are accurate. More likely is that the build-up of the LWB
ultimately governs the feedback strength until a persistent UV background can
be established.
article_processing_charge: No
article_type: original
author:
- first_name: Andrei
full_name: Mesinger, Andrei
last_name: Mesinger
- first_name: Greg L.
full_name: Bryan, Greg L.
last_name: Bryan
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
citation:
ama: Mesinger A, Bryan GL, Haiman Z. Relic H ii regions and radiative feedback at
high redshifts. Monthly Notices of the Royal Astronomical Society. 2009;399(3):1650-1662.
doi:10.1111/j.1365-2966.2009.15404.x
apa: Mesinger, A., Bryan, G. L., & Haiman, Z. (2009). Relic H ii regions and
radiative feedback at high redshifts. Monthly Notices of the Royal Astronomical
Society. Oxford University Press. https://doi.org/10.1111/j.1365-2966.2009.15404.x
chicago: Mesinger, Andrei, Greg L. Bryan, and Zoltán Haiman. “Relic H Ii Regions
and Radiative Feedback at High Redshifts.” Monthly Notices of the Royal Astronomical
Society. Oxford University Press, 2009. https://doi.org/10.1111/j.1365-2966.2009.15404.x.
ieee: A. Mesinger, G. L. Bryan, and Z. Haiman, “Relic H ii regions and radiative
feedback at high redshifts,” Monthly Notices of the Royal Astronomical Society,
vol. 399, no. 3. Oxford University Press, pp. 1650–1662, 2009.
ista: Mesinger A, Bryan GL, Haiman Z. 2009. Relic H ii regions and radiative feedback
at high redshifts. Monthly Notices of the Royal Astronomical Society. 399(3),
1650–1662.
mla: Mesinger, Andrei, et al. “Relic H Ii Regions and Radiative Feedback at High
Redshifts.” Monthly Notices of the Royal Astronomical Society, vol. 399,
no. 3, Oxford University Press, 2009, pp. 1650–62, doi:10.1111/j.1365-2966.2009.15404.x.
short: A. Mesinger, G.L. Bryan, Z. Haiman, Monthly Notices of the Royal Astronomical
Society 399 (2009) 1650–1662.
date_created: 2024-09-06T10:16:16Z
date_published: 2009-10-15T00:00:00Z
date_updated: 2024-09-30T12:42:48Z
day: '15'
doi: 10.1111/j.1365-2966.2009.15404.x
extern: '1'
intvolume: ' 399'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1111/j.1365-2966.2009.15404.x
month: '10'
oa: 1
oa_version: Published Version
page: 1650-1662
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
issn:
- 0035-8711
- 1365-2966
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Relic H ii regions and radiative feedback at high redshifts
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 399
year: '2009'
...
---
_id: '17797'
abstract:
- lang: eng
text: 'It is well known that an initial population of seed black holes (BHs), formed
in the nuclei of low-mass galaxies at high redshift, can simultaneously explain,
through their subsequent growth by mergers and accretion, both the observed evolution
of the quasar luminosity function (LF) and the distribution of remnant supermassive
black hole (SMBH) masses measured in local galactic nuclei. Here we consider three
very different initial conditions for this scenario: models in which initial seed
BHs form in either all, or only a small fraction (fbh = 0.1 or 0.01) of high-redshift
dark matter halos (with Mhalo = 5 × 109 M☉ at z = 6–10). We show that with a suitable
and relatively minor adjustment of two global physical parameters (the radiative
efficiency and mass accretion time-scale of quasar episodes), models with fbh
≈ 0.1 and 1 can accurately reproduce the observed quasar LF at redshifts 0 < z
≲ 6, as well as the remnant SMBH mass function at z = 0. However, SMBHs remain
rare, and the normalization of the high-z quasar LF and the local SMBH mass function
are both significantly underpredicted, if fbh ≲ 0.01. We also show that the merger
history of SMBHs, in the mass range detectable by the future Laser Interferometer
Space Antenna (LISA) instrument, generically looks different as fbh is varied;
this should allow LISA to deliver useful constraints on otherwise degenerate models.'
article_processing_charge: No
article_type: original
author:
- first_name: Zoltán
full_name: Lippai, Zoltán
last_name: Lippai
- first_name: Zsolt
full_name: Frei, Zsolt
last_name: Frei
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
orcid: 0000-0003-3633-5403
citation:
ama: Lippai Z, Frei Z, Haiman Z. On the occupation fraction of seed black holes
in high-redshift dark matter halos. The Astrophysical Journal. 2009;701(1):360-368.
doi:10.1088/0004-637x/701/1/360
apa: Lippai, Z., Frei, Z., & Haiman, Z. (2009). On the occupation fraction of
seed black holes in high-redshift dark matter halos. The Astrophysical Journal.
American Astronomical Society. https://doi.org/10.1088/0004-637x/701/1/360
chicago: Lippai, Zoltán, Zsolt Frei, and Zoltán Haiman. “On the Occupation Fraction
of Seed Black Holes in High-Redshift Dark Matter Halos.” The Astrophysical
Journal. American Astronomical Society, 2009. https://doi.org/10.1088/0004-637x/701/1/360.
ieee: Z. Lippai, Z. Frei, and Z. Haiman, “On the occupation fraction of seed black
holes in high-redshift dark matter halos,” The Astrophysical Journal, vol.
701, no. 1. American Astronomical Society, pp. 360–368, 2009.
ista: Lippai Z, Frei Z, Haiman Z. 2009. On the occupation fraction of seed black
holes in high-redshift dark matter halos. The Astrophysical Journal. 701(1), 360–368.
mla: Lippai, Zoltán, et al. “On the Occupation Fraction of Seed Black Holes in High-Redshift
Dark Matter Halos.” The Astrophysical Journal, vol. 701, no. 1, American
Astronomical Society, 2009, pp. 360–68, doi:10.1088/0004-637x/701/1/360.
short: Z. Lippai, Z. Frei, Z. Haiman, The Astrophysical Journal 701 (2009) 360–368.
date_created: 2024-09-06T10:29:07Z
date_published: 2009-07-22T00:00:00Z
date_updated: 2024-10-02T07:26:28Z
day: '22'
doi: 10.1088/0004-637x/701/1/360
extern: '1'
intvolume: ' 701'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1088/0004-637X/701/1/360
month: '07'
oa: 1
oa_version: Published Version
page: 360-368
publication: The Astrophysical Journal
publication_identifier:
eissn:
- 1538-4357
issn:
- 0004-637X
publication_status: published
publisher: American Astronomical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: On the occupation fraction of seed black holes in high-redshift dark matter
halos
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 701
year: '2009'
...
---
OA_place: repository
OA_type: free access
_id: '17805'
abstract:
- lang: eng
text: We report on the detection by Swift of GRB 080913, and subsequent optical/near-infrared
follow-up observations by GROND, which led to the discovery of its optical/NIR
afterglow and the recognition of its high-z nature via the detection of a spectral
break between the i' and z' bands. Spectroscopy obtained at the ESO-VLT revealed
a continuum extending down to λ = 9400 Å, and zero flux for 7500 Å<λ < 9400 Å,
which we interpret as the onset of a Gunn–Peterson trough at z = 6.695± 0.025
(95.5% confidence level), making GRB 080913 the highest-redshift gamma-ray burst
(GRB) to date, and more distant than the highest-redshift QSO. We note that many
redshift indicators that are based on promptly available burst or afterglow properties
have failed for GRB 080913. We report on our follow-up campaign and compare the
properties of GRB 080913 with bursts at lower redshift. In particular, since the
afterglow of this burst is fainter than typical for GRBs, we show that 2 m class
telescopes can identify most high-redshift GRBs.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: J.
full_name: Greiner, J.
last_name: Greiner
- first_name: T.
full_name: Krühler, T.
last_name: Krühler
- first_name: J. P. U.
full_name: Fynbo, J. P. U.
last_name: Fynbo
- first_name: A.
full_name: Rossi, A.
last_name: Rossi
- first_name: R.
full_name: Schwarz, R.
last_name: Schwarz
- first_name: S.
full_name: Klose, S.
last_name: Klose
- first_name: S.
full_name: Savaglio, S.
last_name: Savaglio
- first_name: N. R.
full_name: Tanvir, N. R.
last_name: Tanvir
- first_name: S.
full_name: McBreen, S.
last_name: McBreen
- first_name: T.
full_name: Totani, T.
last_name: Totani
- first_name: B. B.
full_name: Zhang, B. B.
last_name: Zhang
- first_name: X. F.
full_name: Wu, X. F.
last_name: Wu
- first_name: D.
full_name: Watson, D.
last_name: Watson
- first_name: S. D.
full_name: Barthelmy, S. D.
last_name: Barthelmy
- first_name: A. P.
full_name: Beardmore, A. P.
last_name: Beardmore
- first_name: P.
full_name: Ferrero, P.
last_name: Ferrero
- first_name: N.
full_name: Gehrels, N.
last_name: Gehrels
- first_name: D. A.
full_name: Kann, D. A.
last_name: Kann
- first_name: N.
full_name: Kawai, N.
last_name: Kawai
- first_name: A. Küpcü
full_name: Yoldaş, A. Küpcü
last_name: Yoldaş
- first_name: P.
full_name: Mészáros, P.
last_name: Mészáros
- first_name: B.
full_name: Milvang-Jensen, B.
last_name: Milvang-Jensen
- first_name: S. R.
full_name: Oates, S. R.
last_name: Oates
- first_name: D.
full_name: Pierini, D.
last_name: Pierini
- first_name: P.
full_name: Schady, P.
last_name: Schady
- first_name: K.
full_name: Toma, K.
last_name: Toma
- first_name: P. M.
full_name: Vreeswijk, P. M.
last_name: Vreeswijk
- first_name: A.
full_name: Yoldaş, A.
last_name: Yoldaş
- first_name: B.
full_name: Zhang, B.
last_name: Zhang
- first_name: P.
full_name: Afonso, P.
last_name: Afonso
- first_name: K.
full_name: Aoki, K.
last_name: Aoki
- first_name: D. N.
full_name: Burrows, D. N.
last_name: Burrows
- first_name: C.
full_name: Clemens, C.
last_name: Clemens
- first_name: R.
full_name: Filgas, R.
last_name: Filgas
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
orcid: 0000-0003-3633-5403
- first_name: D. H.
full_name: Hartmann, D. H.
last_name: Hartmann
- first_name: G.
full_name: Hasinger, G.
last_name: Hasinger
- first_name: J.
full_name: Hjorth, J.
last_name: Hjorth
- first_name: E.
full_name: Jehin, E.
last_name: Jehin
- first_name: A. J.
full_name: Levan, A. J.
last_name: Levan
- first_name: E. W.
full_name: Liang, E. W.
last_name: Liang
- first_name: D.
full_name: Malesani, D.
last_name: Malesani
- first_name: T.-S.
full_name: Pyo, T.-S.
last_name: Pyo
- first_name: S.
full_name: Schulze, S.
last_name: Schulze
- first_name: G.
full_name: Szokoly, G.
last_name: Szokoly
- first_name: K.
full_name: Terada, K.
last_name: Terada
- first_name: K.
full_name: Wiersema, K.
last_name: Wiersema
citation:
ama: Greiner J, Krühler T, Fynbo JPU, et al. GRB 080913 at redshift 6.7. The
Astrophysical Journal. 2009;693(2):1610-1620. doi:10.1088/0004-637x/693/2/1610
apa: Greiner, J., Krühler, T., Fynbo, J. P. U., Rossi, A., Schwarz, R., Klose, S.,
… Wiersema, K. (2009). GRB 080913 at redshift 6.7. The Astrophysical Journal.
American Astronomical Society. https://doi.org/10.1088/0004-637x/693/2/1610
chicago: Greiner, J., T. Krühler, J. P. U. Fynbo, A. Rossi, R. Schwarz, S. Klose,
S. Savaglio, et al. “GRB 080913 at Redshift 6.7.” The Astrophysical Journal.
American Astronomical Society, 2009. https://doi.org/10.1088/0004-637x/693/2/1610.
ieee: J. Greiner et al., “GRB 080913 at redshift 6.7,” The Astrophysical
Journal, vol. 693, no. 2. American Astronomical Society, pp. 1610–1620, 2009.
ista: Greiner J, Krühler T, Fynbo JPU, Rossi A, Schwarz R, Klose S, Savaglio S,
Tanvir NR, McBreen S, Totani T, Zhang BB, Wu XF, Watson D, Barthelmy SD, Beardmore
AP, Ferrero P, Gehrels N, Kann DA, Kawai N, Yoldaş AK, Mészáros P, Milvang-Jensen
B, Oates SR, Pierini D, Schady P, Toma K, Vreeswijk PM, Yoldaş A, Zhang B, Afonso
P, Aoki K, Burrows DN, Clemens C, Filgas R, Haiman Z, Hartmann DH, Hasinger G,
Hjorth J, Jehin E, Levan AJ, Liang EW, Malesani D, Pyo T-S, Schulze S, Szokoly
G, Terada K, Wiersema K. 2009. GRB 080913 at redshift 6.7. The Astrophysical Journal.
693(2), 1610–1620.
mla: Greiner, J., et al. “GRB 080913 at Redshift 6.7.” The Astrophysical Journal,
vol. 693, no. 2, American Astronomical Society, 2009, pp. 1610–20, doi:10.1088/0004-637x/693/2/1610.
short: J. Greiner, T. Krühler, J.P.U. Fynbo, A. Rossi, R. Schwarz, S. Klose, S.
Savaglio, N.R. Tanvir, S. McBreen, T. Totani, B.B. Zhang, X.F. Wu, D. Watson,
S.D. Barthelmy, A.P. Beardmore, P. Ferrero, N. Gehrels, D.A. Kann, N. Kawai, A.K.
Yoldaş, P. Mészáros, B. Milvang-Jensen, S.R. Oates, D. Pierini, P. Schady, K.
Toma, P.M. Vreeswijk, A. Yoldaş, B. Zhang, P. Afonso, K. Aoki, D.N. Burrows, C.
Clemens, R. Filgas, Z. Haiman, D.H. Hartmann, G. Hasinger, J. Hjorth, E. Jehin,
A.J. Levan, E.W. Liang, D. Malesani, T.-S. Pyo, S. Schulze, G. Szokoly, K. Terada,
K. Wiersema, The Astrophysical Journal 693 (2009) 1610–1620.
date_created: 2024-09-06T11:33:49Z
date_published: 2009-03-10T00:00:00Z
date_updated: 2024-11-12T10:14:41Z
day: '10'
doi: 10.1088/0004-637x/693/2/1610
extern: '1'
external_id:
arxiv:
- '0810.2314'
intvolume: ' 693'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.0810.2314
month: '03'
oa: 1
oa_version: Preprint
page: 1610-1620
publication: The Astrophysical Journal
publication_identifier:
eissn:
- 1538-4357
issn:
- 0004-637X
publication_status: published
publisher: American Astronomical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: GRB 080913 at redshift 6.7
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 693
year: '2009'
...
---
_id: '17809'
abstract:
- lang: eng
text: Supermassive black hole binaries (SMBHBs) in galactic nuclei are thought to
be a common by-product of major galaxy mergers. We use simple disk models for
the circumbinary gas and for the binary–disk interaction to follow the orbital
decay of SMBHBs with a range of total masses (M) and mass ratios (q), through
physically distinct regions of the disk, until gravitational waves (GWs) take
over their evolution. Prior to the GW-driven phase, the viscous decay is generically
in the stalled "secondary-dominated" regime. SMBHBs spend a non-negligible fraction
of a fiducial time of 107 yr at orbital periods between days ≲torb≲ yr, and we
argue that they may be sufficiently common to be detectable, provided they are
luminous during these stages. A dedicated optical or X-ray survey could identify
coalescing SMBHBs statistically, as a population of periodically variable quasars,
whose abundance obeys the scaling Nvar ∝ tαvar within a range of periods around
tvar∼ tens of weeks. SMBHBs with M ≲ 107 M☉, with 0.5 ≲ α ≲ 1.5, would probe the
physics of viscous orbital decay, whereas the detection of a population of higher-mass
binaries, with α = 8/3, would confirm that their decay is driven by GWs. The lowest-mass
SMBHBs (M ≲ 105–6 M☉) enter the GW-driven regime at short orbital periods, when
they are already in the frequency band of the Laser Interferometric Space Antenna
(LISA). While viscous processes are negligible in the last few years of coalescence,
they could reduce the amplitude of any unresolved background due to near-stationary
LISA sources. We discuss modest constraints on the SMBHB population already available
from existing data, and the sensitivity and sky coverage requirements for a detection
in future surveys. SMBHBs may also be identified from velocity shifts in their
spectra; we discuss the expected abundance of SMBHBs as a function of their orbital
velocity.
article_processing_charge: No
article_type: original
author:
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Bence
full_name: Kocsis, Bence
last_name: Kocsis
- first_name: Kristen
full_name: Menou, Kristen
last_name: Menou
citation:
ama: Haiman Z, Kocsis B, Menou K. The population of viscosity- and gravitational
wave-driven supermassive black hole binaries among luminous active galactic nuclei.
The Astrophysical Journal. 2009;700(2):1952-1969. doi:10.1088/0004-637x/700/2/1952
apa: Haiman, Z., Kocsis, B., & Menou, K. (2009). The population of viscosity-
and gravitational wave-driven supermassive black hole binaries among luminous
active galactic nuclei. The Astrophysical Journal. American Astronomical
Society. https://doi.org/10.1088/0004-637x/700/2/1952
chicago: Haiman, Zoltán, Bence Kocsis, and Kristen Menou. “The Population of Viscosity-
and Gravitational Wave-Driven Supermassive Black Hole Binaries among Luminous
Active Galactic Nuclei.” The Astrophysical Journal. American Astronomical
Society, 2009. https://doi.org/10.1088/0004-637x/700/2/1952.
ieee: Z. Haiman, B. Kocsis, and K. Menou, “The population of viscosity- and gravitational
wave-driven supermassive black hole binaries among luminous active galactic nuclei,”
The Astrophysical Journal, vol. 700, no. 2. American Astronomical Society,
pp. 1952–1969, 2009.
ista: Haiman Z, Kocsis B, Menou K. 2009. The population of viscosity- and gravitational
wave-driven supermassive black hole binaries among luminous active galactic nuclei.
The Astrophysical Journal. 700(2), 1952–1969.
mla: Haiman, Zoltán, et al. “The Population of Viscosity- and Gravitational Wave-Driven
Supermassive Black Hole Binaries among Luminous Active Galactic Nuclei.” The
Astrophysical Journal, vol. 700, no. 2, American Astronomical Society, 2009,
pp. 1952–69, doi:10.1088/0004-637x/700/2/1952.
short: Z. Haiman, B. Kocsis, K. Menou, The Astrophysical Journal 700 (2009) 1952–1969.
date_created: 2024-09-06T11:38:01Z
date_published: 2009-07-17T00:00:00Z
date_updated: 2024-09-18T12:26:50Z
day: '17'
doi: 10.1088/0004-637x/700/2/1952
extern: '1'
intvolume: ' 700'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1088/0004-637X/700/2/1952
month: '07'
oa: 1
oa_version: Published Version
page: 1952-1969
publication: The Astrophysical Journal
publication_identifier:
issn:
- 0004-637X
- 1538-4357
publication_status: published
publisher: American Astronomical Society
quality_controlled: '1'
related_material:
link:
- relation: erratum
url: https://doi.org/10.3847/1538-4357/ac93f7
scopus_import: '1'
status: public
title: The population of viscosity- and gravitational wave-driven supermassive black
hole binaries among luminous active galactic nuclei
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 700
year: '2009'
...
---
_id: '1798'
abstract:
- lang: eng
text: The mammalian brain is assembled from thousands of neuronal cell types that
are organized in distinct circuits to perform behaviorally relevant computations.
Transgenic mouse lines with selectively marked cell types would facilitate our
ability to dissect functional components of complex circuits. We carried out a
screen for cell type-specific green fluorescent protein expression in the retina
using BAC transgenic mice from the GENSAT project. Among others, we identified
mouse lines in which the inhibitory cell types of the night vision and directional
selective circuit were selectively labeled. We quantified the stratification patterns
to predict potential synaptic connectivity between marked cells of different lines
and found that some of the lines enabled targeted recordings and imaging of cell
types from developing or mature retinal circuits. Our results suggest the potential
use of a stratification-based screening approach for characterizing neuronal circuitry
in other layered brain structures, such as the neocortex.
acknowledgement: This study was supported by Friedrich Miescher Institute funds, a
US Office of Naval Research Naval International Cooperative Opportunities in Science
and Technology Program grant, a Marie Curie Excellence grant, a National Center
for Competence in Research in Genetics grant and a European Union HEALTH-F2-223156
grant to B.R., and by National Institute of Neurological Disorders and Stroke contracts
N01NS02331 and HHSN271200723701C to N.H.
author:
- first_name: Sandra
full_name: Sandra Siegert
id: 36ACD32E-F248-11E8-B48F-1D18A9856A87
last_name: Siegert
orcid: 0000-0001-8635-0877
- first_name: Brigitte
full_name: Scherf, Brigitte G
last_name: Scherf
- first_name: Karina
full_name: Del Punta, Karina
last_name: Del Punta
- first_name: Nick
full_name: Didkovsky, Nick
last_name: Didkovsky
- first_name: Nathaniel
full_name: Heintz, Nathaniel M
last_name: Heintz
- first_name: Botond
full_name: Roska, Botond M
last_name: Roska
citation:
ama: Siegert S, Scherf B, Del Punta K, Didkovsky N, Heintz N, Roska B. Genetic address
book for retinal cell types. Nature Neuroscience. 2009;12(9):1197-1204.
doi:10.1038/nn.2370
apa: Siegert, S., Scherf, B., Del Punta, K., Didkovsky, N., Heintz, N., & Roska,
B. (2009). Genetic address book for retinal cell types. Nature Neuroscience.
Nature Publishing Group. https://doi.org/10.1038/nn.2370
chicago: Siegert, Sandra, Brigitte Scherf, Karina Del Punta, Nick Didkovsky, Nathaniel
Heintz, and Botond Roska. “Genetic Address Book for Retinal Cell Types.” Nature
Neuroscience. Nature Publishing Group, 2009. https://doi.org/10.1038/nn.2370.
ieee: S. Siegert, B. Scherf, K. Del Punta, N. Didkovsky, N. Heintz, and B. Roska,
“Genetic address book for retinal cell types,” Nature Neuroscience, vol.
12, no. 9. Nature Publishing Group, pp. 1197–1204, 2009.
ista: Siegert S, Scherf B, Del Punta K, Didkovsky N, Heintz N, Roska B. 2009. Genetic
address book for retinal cell types. Nature Neuroscience. 12(9), 1197–1204.
mla: Siegert, Sandra, et al. “Genetic Address Book for Retinal Cell Types.” Nature
Neuroscience, vol. 12, no. 9, Nature Publishing Group, 2009, pp. 1197–204,
doi:10.1038/nn.2370.
short: S. Siegert, B. Scherf, K. Del Punta, N. Didkovsky, N. Heintz, B. Roska, Nature
Neuroscience 12 (2009) 1197–1204.
date_created: 2018-12-11T11:54:04Z
date_published: 2009-09-01T00:00:00Z
date_updated: 2021-01-12T06:53:16Z
day: '01'
doi: 10.1038/nn.2370
extern: 1
intvolume: ' 12'
issue: '9'
month: '09'
page: 1197 - 1204
publication: Nature Neuroscience
publication_status: published
publisher: Nature Publishing Group
publist_id: '5312'
quality_controlled: 0
status: public
title: Genetic address book for retinal cell types
type: journal_article
volume: 12
year: '2009'
...
---
_id: '1799'
abstract:
- lang: eng
text: 'The detection of approaching objects, such as looming predators, is necessary
for survival. Which neurons and circuits mediate this function? We combined genetic
labeling of cell types, two-photon microscopy, electrophysiology and theoretical
modeling to address this question. We identify an approach-sensitive ganglion
cell type in the mouse retina, resolve elements of its afferent neural circuit,
and describe how these confer approach sensitivity on the ganglion cell. The circuit''s
essential building block is a rapid inhibitory pathway: it selectively suppresses
responses to non-approaching objects. This rapid inhibitory pathway, which includes
AII amacrine cells connected to bipolar cells through electrical synapses, was
previously described in the context of night-time vision. In the daytime conditions
of our experiments, the same pathway conveys signals in the reverse direction.
The dual use of a neural pathway in different physiological conditions illustrates
the efficiency with which several functions can be accommodated in a single circuit.'
acknowledgement: The study was supported by Friedrich Miescher Institute funds, a
US Office of Naval Research Naval International Cooperative Opportunities in Science
and Technology program grant, a Marie Curie Excellence Grant, a Human Frontier Science
Program Young Investigator grant, a National Centers of Competence in Research in
Genetics grant and a European Union HEALTH-F2-223156 grant to B.R., a Marie Curie
Postdoctoral Fellowship to T.A.M., the Centre National de la Recherche Scientifique
through the Unité Mixte de Recherche 8550 to R.A.d.S.
author:
- first_name: Thomas
full_name: Münch, Thomas A
last_name: Münch
- first_name: Ravá
full_name: Da Silveira, Ravá A
last_name: Da Silveira
- first_name: Sandra
full_name: Sandra Siegert
id: 36ACD32E-F248-11E8-B48F-1D18A9856A87
last_name: Siegert
orcid: 0000-0001-8635-0877
- first_name: Tim
full_name: Viney, Tim J
last_name: Viney
- first_name: Gautam
full_name: Awatramani, Gautam B
last_name: Awatramani
- first_name: Botond
full_name: Roska, Botond M
last_name: Roska
citation:
ama: Münch T, Da Silveira R, Siegert S, Viney T, Awatramani G, Roska B. Approach
sensitivity in the retina processed by a multifunctional neural circuit. Nature
Neuroscience. 2009;12(10):1308-1316. doi:10.1038/nn.2389
apa: Münch, T., Da Silveira, R., Siegert, S., Viney, T., Awatramani, G., & Roska,
B. (2009). Approach sensitivity in the retina processed by a multifunctional neural
circuit. Nature Neuroscience. Nature Publishing Group. https://doi.org/10.1038/nn.2389
chicago: Münch, Thomas, Ravá Da Silveira, Sandra Siegert, Tim Viney, Gautam Awatramani,
and Botond Roska. “Approach Sensitivity in the Retina Processed by a Multifunctional
Neural Circuit.” Nature Neuroscience. Nature Publishing Group, 2009. https://doi.org/10.1038/nn.2389.
ieee: T. Münch, R. Da Silveira, S. Siegert, T. Viney, G. Awatramani, and B. Roska,
“Approach sensitivity in the retina processed by a multifunctional neural circuit,”
Nature Neuroscience, vol. 12, no. 10. Nature Publishing Group, pp. 1308–1316,
2009.
ista: Münch T, Da Silveira R, Siegert S, Viney T, Awatramani G, Roska B. 2009. Approach
sensitivity in the retina processed by a multifunctional neural circuit. Nature
Neuroscience. 12(10), 1308–1316.
mla: Münch, Thomas, et al. “Approach Sensitivity in the Retina Processed by a Multifunctional
Neural Circuit.” Nature Neuroscience, vol. 12, no. 10, Nature Publishing
Group, 2009, pp. 1308–16, doi:10.1038/nn.2389.
short: T. Münch, R. Da Silveira, S. Siegert, T. Viney, G. Awatramani, B. Roska,
Nature Neuroscience 12 (2009) 1308–1316.
date_created: 2018-12-11T11:54:04Z
date_published: 2009-10-01T00:00:00Z
date_updated: 2021-01-12T06:53:16Z
day: '01'
doi: 10.1038/nn.2389
extern: 1
intvolume: ' 12'
issue: '10'
month: '10'
page: 1308 - 1316
publication: Nature Neuroscience
publication_status: published
publisher: Nature Publishing Group
publist_id: '5311'
quality_controlled: 0
status: public
title: Approach sensitivity in the retina processed by a multifunctional neural circuit
type: journal_article
volume: 12
year: '2009'
...
---
OA_type: closed access
_id: '18028'
abstract:
- lang: eng
text: We measure the conductance and current–voltage characteristics of two amine-terminated
molecular wires— 4,4'-diaminostilbene and bis-(4-aminophenyl)acetylene—by breaking
Au point contacts in a molecular solution at room temperature. Histograms compiled
from thousands of measurements show a slight increase in the molecular junction
conductance (I/V) as the bias is increased to nearly 450 mV. Comparatively, similar
conductance measurements made with 1,6-diaminohexane, a saturated molecule, demonstrate
almost no bias dependence. We also present a new technique to measure a statistically
defined current–voltage (I–V) curve. Application to all three molecules shows
that 4,4'-diaminostilbene exhibits the largest increase in differential conductance
as a function of applied bias. This indicates that the predominant transport channel
for 4,4'-diaminostilbene (the highest occupied molecular orbital) is closer to
the Fermi level of the metal than that of the other molecules, consistent with
the trends observed in the molecular ionization potential. We find that junctions
constructed with the conjugated molecules show greater noise in individual junctions
and less structural stability, on average, at biases greater than 450 mV. In contrast,
junctions formed with the alkane can sustain a bias of up to 900 mV. This significantly
affects the statistically averaged I–V characteristic measured for the conjugated
molecules at higher bias.
article_number: '434009'
article_processing_charge: No
article_type: original
author:
- first_name: J R
full_name: Widawsky, J R
last_name: Widawsky
- first_name: M
full_name: Kamenetska, M
last_name: Kamenetska
- first_name: J
full_name: Klare, J
last_name: Klare
- first_name: C
full_name: Nuckolls, C
last_name: Nuckolls
- first_name: M L
full_name: Steigerwald, M L
last_name: Steigerwald
- first_name: M S
full_name: Hybertsen, M S
last_name: Hybertsen
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
citation:
ama: Widawsky JR, Kamenetska M, Klare J, et al. Measurement of voltage-dependent
electronic transport across amine-linked single-molecular-wire junctions. Nanotechnology.
2009;20(43). doi:10.1088/0957-4484/20/43/434009
apa: Widawsky, J. R., Kamenetska, M., Klare, J., Nuckolls, C., Steigerwald, M. L.,
Hybertsen, M. S., & Venkataraman, L. (2009). Measurement of voltage-dependent
electronic transport across amine-linked single-molecular-wire junctions. Nanotechnology.
IOP Publishing. https://doi.org/10.1088/0957-4484/20/43/434009
chicago: Widawsky, J R, M Kamenetska, J Klare, C Nuckolls, M L Steigerwald, M S
Hybertsen, and Latha Venkataraman. “Measurement of Voltage-Dependent Electronic
Transport across Amine-Linked Single-Molecular-Wire Junctions.” Nanotechnology.
IOP Publishing, 2009. https://doi.org/10.1088/0957-4484/20/43/434009.
ieee: J. R. Widawsky et al., “Measurement of voltage-dependent electronic
transport across amine-linked single-molecular-wire junctions,” Nanotechnology,
vol. 20, no. 43. IOP Publishing, 2009.
ista: Widawsky JR, Kamenetska M, Klare J, Nuckolls C, Steigerwald ML, Hybertsen
MS, Venkataraman L. 2009. Measurement of voltage-dependent electronic transport
across amine-linked single-molecular-wire junctions. Nanotechnology. 20(43), 434009.
mla: Widawsky, J. R., et al. “Measurement of Voltage-Dependent Electronic Transport
across Amine-Linked Single-Molecular-Wire Junctions.” Nanotechnology, vol.
20, no. 43, 434009, IOP Publishing, 2009, doi:10.1088/0957-4484/20/43/434009.
short: J.R. Widawsky, M. Kamenetska, J. Klare, C. Nuckolls, M.L. Steigerwald, M.S.
Hybertsen, L. Venkataraman, Nanotechnology 20 (2009).
date_created: 2024-09-09T13:49:43Z
date_published: 2009-10-02T00:00:00Z
date_updated: 2025-01-03T10:12:29Z
day: '02'
doi: 10.1088/0957-4484/20/43/434009
extern: '1'
external_id:
pmid:
- '19801764'
intvolume: ' 20'
issue: '43'
language:
- iso: eng
month: '10'
oa_version: None
pmid: 1
publication: Nanotechnology
publication_identifier:
eissn:
- 1361-6528
issn:
- 0957-4484
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Measurement of voltage-dependent electronic transport across amine-linked single-molecular-wire
junctions
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 20
year: '2009'
...
---
OA_type: closed access
_id: '18029'
abstract:
- lang: eng
text: We compare the conductance of 1,4-bis(methylthio)benzene with that of 2,3,6,7-tetrahydrobenzo[1,2-b:4,5-b′]dithiophene
and the conductance of 1,4-bis(methylseleno)benzene with that of 2,3,6,7-tetrahydrobenzo[1,2-b:4,5-b′]diselenophene
and show explicitly that the orientation of an Au−S or Au−Se bond relative to
the aromatic π system controls electron transport through conjugated molecules.
Specifically, we have found that the conduction pathway connects the Au electrodes
to the aromatic π-system via the chalcogen p lone pairs, and greater overlaps
among these components lead to higher conductivity through the molecular junction.
article_processing_charge: No
article_type: letter_note
author:
- first_name: Young S.
full_name: Park, Young S.
last_name: Park
- first_name: Jonathan R.
full_name: Widawsky, Jonathan R.
last_name: Widawsky
- first_name: Maria
full_name: Kamenetska, Maria
last_name: Kamenetska
- first_name: Michael L.
full_name: Steigerwald, Michael L.
last_name: Steigerwald
- first_name: Mark S.
full_name: Hybertsen, Mark S.
last_name: Hybertsen
- first_name: Colin
full_name: Nuckolls, Colin
last_name: Nuckolls
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
citation:
ama: Park YS, Widawsky JR, Kamenetska M, et al. Frustrated rotations in single-molecule
junctions. Journal of the American Chemical Society. 2009;131(31):10820-10821.
doi:10.1021/ja903731m
apa: Park, Y. S., Widawsky, J. R., Kamenetska, M., Steigerwald, M. L., Hybertsen,
M. S., Nuckolls, C., & Venkataraman, L. (2009). Frustrated rotations in single-molecule
junctions. Journal of the American Chemical Society. American Chemical
Society. https://doi.org/10.1021/ja903731m
chicago: Park, Young S., Jonathan R. Widawsky, Maria Kamenetska, Michael L. Steigerwald,
Mark S. Hybertsen, Colin Nuckolls, and Latha Venkataraman. “Frustrated Rotations
in Single-Molecule Junctions.” Journal of the American Chemical Society.
American Chemical Society, 2009. https://doi.org/10.1021/ja903731m.
ieee: Y. S. Park et al., “Frustrated rotations in single-molecule junctions,”
Journal of the American Chemical Society, vol. 131, no. 31. American Chemical
Society, pp. 10820–10821, 2009.
ista: Park YS, Widawsky JR, Kamenetska M, Steigerwald ML, Hybertsen MS, Nuckolls
C, Venkataraman L. 2009. Frustrated rotations in single-molecule junctions. Journal
of the American Chemical Society. 131(31), 10820–10821.
mla: Park, Young S., et al. “Frustrated Rotations in Single-Molecule Junctions.”
Journal of the American Chemical Society, vol. 131, no. 31, American Chemical
Society, 2009, pp. 10820–21, doi:10.1021/ja903731m.
short: Y.S. Park, J.R. Widawsky, M. Kamenetska, M.L. Steigerwald, M.S. Hybertsen,
C. Nuckolls, L. Venkataraman, Journal of the American Chemical Society 131 (2009)
10820–10821.
date_created: 2024-09-09T13:51:45Z
date_published: 2009-07-17T00:00:00Z
date_updated: 2025-01-03T10:14:29Z
day: '17'
doi: 10.1021/ja903731m
extern: '1'
external_id:
pmid:
- '19722660'
intvolume: ' 131'
issue: '31'
language:
- iso: eng
month: '07'
oa_version: None
page: 10820-10821
pmid: 1
publication: Journal of the American Chemical Society
publication_identifier:
eissn:
- 1520-5126
issn:
- 0002-7863
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Frustrated rotations in single-molecule junctions
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 131
year: '2009'
...
---
OA_place: repository
OA_type: green
_id: '18030'
abstract:
- lang: eng
text: We analyze the formation and evolution statistics of single-molecule junctions
bonded to gold electrodes using amine, methyl sulfide, and dimethyl phosphine
link groups by measuring conductance as a function of junction elongation. For
each link, the maximum elongation and formation probability increase with molecular
length, strongly suggesting that processes other than just metal-molecule bond
breakage play a key role in junction evolution under stress. Density functional
theory calculations of adiabatic trajectories show sequences of atomic-scale changes
in junction structure, including shifts in the attachment point, that account
for the long conductance plateau lengths observed.
article_number: '126803'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: M.
full_name: Kamenetska, M.
last_name: Kamenetska
- first_name: M.
full_name: Koentopp, M.
last_name: Koentopp
- first_name: A. C.
full_name: Whalley, A. C.
last_name: Whalley
- first_name: Y. S.
full_name: Park, Y. S.
last_name: Park
- first_name: M. L.
full_name: Steigerwald, M. L.
last_name: Steigerwald
- first_name: C.
full_name: Nuckolls, C.
last_name: Nuckolls
- first_name: M. S.
full_name: Hybertsen, M. S.
last_name: Hybertsen
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
citation:
ama: Kamenetska M, Koentopp M, Whalley AC, et al. Formation and evolution of single-molecule
junctions. Physical Review Letters. 2009;102(12). doi:10.1103/physrevlett.102.126803
apa: Kamenetska, M., Koentopp, M., Whalley, A. C., Park, Y. S., Steigerwald, M.
L., Nuckolls, C., … Venkataraman, L. (2009). Formation and evolution of single-molecule
junctions. Physical Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.102.126803
chicago: Kamenetska, M., M. Koentopp, A. C. Whalley, Y. S. Park, M. L. Steigerwald,
C. Nuckolls, M. S. Hybertsen, and Latha Venkataraman. “Formation and Evolution
of Single-Molecule Junctions.” Physical Review Letters. American Physical
Society, 2009. https://doi.org/10.1103/physrevlett.102.126803.
ieee: M. Kamenetska et al., “Formation and evolution of single-molecule junctions,”
Physical Review Letters, vol. 102, no. 12. American Physical Society, 2009.
ista: Kamenetska M, Koentopp M, Whalley AC, Park YS, Steigerwald ML, Nuckolls C,
Hybertsen MS, Venkataraman L. 2009. Formation and evolution of single-molecule
junctions. Physical Review Letters. 102(12), 126803.
mla: Kamenetska, M., et al. “Formation and Evolution of Single-Molecule Junctions.”
Physical Review Letters, vol. 102, no. 12, 126803, American Physical Society,
2009, doi:10.1103/physrevlett.102.126803.
short: M. Kamenetska, M. Koentopp, A.C. Whalley, Y.S. Park, M.L. Steigerwald, C.
Nuckolls, M.S. Hybertsen, L. Venkataraman, Physical Review Letters 102 (2009).
date_created: 2024-09-09T13:52:37Z
date_published: 2009-03-24T00:00:00Z
date_updated: 2025-01-03T10:17:01Z
day: '24'
doi: 10.1103/physrevlett.102.126803
extern: '1'
external_id:
arxiv:
- '0901.1134'
pmid:
- '19392306'
intvolume: ' 102'
issue: '12'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/0901.1134
month: '03'
oa: 1
oa_version: Preprint
pmid: 1
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Formation and evolution of single-molecule junctions
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 102
year: '2009'
...
---
OA_place: repository
OA_type: green
_id: '18031'
abstract:
- lang: eng
text: 'Molecular-scale components are expected to be central to the realization
of nanoscale electronic devices1,2,3. Although molecular-scale switching has been
reported in atomic quantum point contacts4,5,6, single-molecule junctions provide
the additional flexibility of tuning the on/off conductance states through molecular
design. To date, switching in single-molecule junctions has been attributed to
changes in the conformation or charge state of the molecule7,8,9,10,11,12. Here,
we demonstrate reversible binary switching in a single-molecule junction by mechanical
control of the metal–molecule contact geometry. We show that 4,4''-bipyridine–gold
single-molecule junctions can be reversibly switched between two conductance states
through repeated junction elongation and compression. Using first-principles calculations,
we attribute the different measured conductance states to distinct contact geometries
at the flexible but stable nitrogen–gold bond: conductance is low when the N–Au
bond is perpendicular to the conducting π-system, and high otherwise. This switching
mechanism, inherent to the pyridine–gold link, could form the basis of a new class
of mechanically activated single-molecule switches.'
article_processing_charge: No
article_type: letter_note
arxiv: 1
author:
- first_name: Su Ying
full_name: Quek, Su Ying
last_name: Quek
- first_name: Maria
full_name: Kamenetska, Maria
last_name: Kamenetska
- first_name: Michael L.
full_name: Steigerwald, Michael L.
last_name: Steigerwald
- first_name: Hyoung Joon
full_name: Choi, Hyoung Joon
last_name: Choi
- first_name: Steven G.
full_name: Louie, Steven G.
last_name: Louie
- first_name: Mark S.
full_name: Hybertsen, Mark S.
last_name: Hybertsen
- first_name: J. B.
full_name: Neaton, J. B.
last_name: Neaton
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
citation:
ama: Quek SY, Kamenetska M, Steigerwald ML, et al. Mechanically controlled binary
conductance switching of a single-molecule junction. Nature Nanotechnology.
2009;4(4):230-234. doi:10.1038/nnano.2009.10
apa: Quek, S. Y., Kamenetska, M., Steigerwald, M. L., Choi, H. J., Louie, S. G.,
Hybertsen, M. S., … Venkataraman, L. (2009). Mechanically controlled binary conductance
switching of a single-molecule junction. Nature Nanotechnology. Springer
Nature. https://doi.org/10.1038/nnano.2009.10
chicago: Quek, Su Ying, Maria Kamenetska, Michael L. Steigerwald, Hyoung Joon Choi,
Steven G. Louie, Mark S. Hybertsen, J. B. Neaton, and Latha Venkataraman. “Mechanically
Controlled Binary Conductance Switching of a Single-Molecule Junction.” Nature
Nanotechnology. Springer Nature, 2009. https://doi.org/10.1038/nnano.2009.10.
ieee: S. Y. Quek et al., “Mechanically controlled binary conductance switching
of a single-molecule junction,” Nature Nanotechnology, vol. 4, no. 4. Springer
Nature, pp. 230–234, 2009.
ista: Quek SY, Kamenetska M, Steigerwald ML, Choi HJ, Louie SG, Hybertsen MS, Neaton
JB, Venkataraman L. 2009. Mechanically controlled binary conductance switching
of a single-molecule junction. Nature Nanotechnology. 4(4), 230–234.
mla: Quek, Su Ying, et al. “Mechanically Controlled Binary Conductance Switching
of a Single-Molecule Junction.” Nature Nanotechnology, vol. 4, no. 4, Springer
Nature, 2009, pp. 230–34, doi:10.1038/nnano.2009.10.
short: S.Y. Quek, M. Kamenetska, M.L. Steigerwald, H.J. Choi, S.G. Louie, M.S. Hybertsen,
J.B. Neaton, L. Venkataraman, Nature Nanotechnology 4 (2009) 230–234.
date_created: 2024-09-09T13:53:36Z
date_published: 2009-04-01T00:00:00Z
date_updated: 2025-01-03T10:42:35Z
day: '01'
doi: 10.1038/nnano.2009.10
extern: '1'
external_id:
arxiv:
- '0901.1139'
pmid:
- '19350032'
intvolume: ' 4'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/0901.1139
month: '04'
oa: 1
oa_version: Preprint
page: 230-234
pmid: 1
publication: Nature Nanotechnology
publication_identifier:
eissn:
- 1748-3395
issn:
- 1748-3387
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Mechanically controlled binary conductance switching of a single-molecule junction
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 4
year: '2009'
...
---
_id: '1825'
abstract:
- lang: eng
text: 'Many membrane channels and receptors exhibit adaptive, or desensitized, response
to a strong sustained input stimulus. A key mechanism that underlies this response
is the slow, activity-dependent removal of responding molecules to a pool which
is unavailable to respond immediately to the input. This mechanism is implemented
in different ways in various biological systems and has traditionally been studied
separately for each. Here we highlight the common aspects of this principle, shared
by many biological systems, and suggest a unifying theoretical framework. We study
theoretically a class of models which describes the general mechanism and allows
us to distinguish its universal from system-specific features. We show that under
general conditions, regardless of the details of kinetics, molecule availability
encodes an averaging over past activity and feeds back multiplicatively on the
system output. The kinetics of recovery from unavailability determines the effective
memory kernel inside the feedback branch, giving rise to a variety of system-specific
forms of adaptive response—precise or input-dependent, exponential or power-law—as
special cases of the same model. '
author:
- first_name: Tamar
full_name: Tamar Friedlander
id: 36A5845C-F248-11E8-B48F-1D18A9856A87
last_name: Friedlander
- first_name: Naama
full_name: Brenner, Naama
last_name: Brenner
citation:
ama: Friedlander T, Brenner N. Adaptive response by state-dependent inactivation.
PNAS. 2009;106(52):22558-22563. doi:10.1073/pnas.0902146106
apa: Friedlander, T., & Brenner, N. (2009). Adaptive response by state-dependent
inactivation. PNAS. National Academy of Sciences. https://doi.org/10.1073/pnas.0902146106
chicago: Friedlander, Tamar, and Naama Brenner. “Adaptive Response by State-Dependent
Inactivation.” PNAS. National Academy of Sciences, 2009. https://doi.org/10.1073/pnas.0902146106 .
ieee: T. Friedlander and N. Brenner, “Adaptive response by state-dependent inactivation,”
PNAS, vol. 106, no. 52. National Academy of Sciences, pp. 22558–22563,
2009.
ista: Friedlander T, Brenner N. 2009. Adaptive response by state-dependent inactivation.
PNAS. 106(52), 22558–22563.
mla: Friedlander, Tamar, and Naama Brenner. “Adaptive Response by State-Dependent
Inactivation.” PNAS, vol. 106, no. 52, National Academy of Sciences, 2009,
pp. 22558–63, doi:10.1073/pnas.0902146106
.
short: T. Friedlander, N. Brenner, PNAS 106 (2009) 22558–22563.
date_created: 2018-12-11T11:54:13Z
date_published: 2009-12-01T00:00:00Z
date_updated: 2021-01-12T06:53:26Z
day: '01'
doi: '10.1073/pnas.0902146106 '
extern: 1
intvolume: ' 106'
issue: '52'
main_file_link:
- open_access: '1'
url: http://www.pnas.org/content/106/52/22558.full.pdf
month: '12'
oa: 1
page: 22558 - 22563
publication: PNAS
publication_status: published
publisher: National Academy of Sciences
publist_id: '5281'
quality_controlled: 0
status: public
title: Adaptive response by state-dependent inactivation
type: journal_article
volume: 106
year: '2009'
...
---
OA_type: closed access
_id: '18356'
abstract:
- lang: eng
text: Similarity is one of the most important abstract concepts in human perception
of the world. In computer vision, numerous applications deal with comparing objects
observed in a scene with some a priori known patterns. Often, it happens that
while two objects are not similar, they have large similar parts, that is, they
are partially similar. Here, we present a novel approach to quantify partial similarity
using the notion of Pareto optimality. We exemplify our approach on the problems
of recognizing non-rigid geometric objects, images, and analyzing text sequences.
article_processing_charge: No
article_type: original
author:
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Michael M.
full_name: Bronstein, Michael M.
last_name: Bronstein
- first_name: Alfred M.
full_name: Bruckstein, Alfred M.
last_name: Bruckstein
- first_name: Ron
full_name: Kimmel, Ron
last_name: Kimmel
citation:
ama: Bronstein AM, Bronstein MM, Bruckstein AM, Kimmel R. Partial similarity of
objects, or how to compare a centaur to a horse. International Journal of Computer
Vision. 2009;84(2):163-183. doi:10.1007/s11263-008-0147-3
apa: Bronstein, A. M., Bronstein, M. M., Bruckstein, A. M., & Kimmel, R. (2009).
Partial similarity of objects, or how to compare a centaur to a horse. International
Journal of Computer Vision. Springer Nature. https://doi.org/10.1007/s11263-008-0147-3
chicago: Bronstein, Alex M., Michael M. Bronstein, Alfred M. Bruckstein, and Ron
Kimmel. “Partial Similarity of Objects, or How to Compare a Centaur to a Horse.”
International Journal of Computer Vision. Springer Nature, 2009. https://doi.org/10.1007/s11263-008-0147-3.
ieee: A. M. Bronstein, M. M. Bronstein, A. M. Bruckstein, and R. Kimmel, “Partial
similarity of objects, or how to compare a centaur to a horse,” International
Journal of Computer Vision, vol. 84, no. 2. Springer Nature, pp. 163–183,
2009.
ista: Bronstein AM, Bronstein MM, Bruckstein AM, Kimmel R. 2009. Partial similarity
of objects, or how to compare a centaur to a horse. International Journal of Computer
Vision. 84(2), 163–183.
mla: Bronstein, Alex M., et al. “Partial Similarity of Objects, or How to Compare
a Centaur to a Horse.” International Journal of Computer Vision, vol. 84,
no. 2, Springer Nature, 2009, pp. 163–83, doi:10.1007/s11263-008-0147-3.
short: A.M. Bronstein, M.M. Bronstein, A.M. Bruckstein, R. Kimmel, International
Journal of Computer Vision 84 (2009) 163–183.
date_created: 2024-10-15T11:20:54Z
date_published: 2009-08-01T00:00:00Z
date_updated: 2024-10-22T07:55:59Z
day: '01'
doi: 10.1007/s11263-008-0147-3
extern: '1'
intvolume: ' 84'
issue: '2'
language:
- iso: eng
month: '08'
oa_version: None
page: 163-183
publication: International Journal of Computer Vision
publication_identifier:
eissn:
- 1573-1405
issn:
- 0920-5691
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Partial similarity of objects, or how to compare a centaur to a horse
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 84
year: '2009'
...
---
OA_type: closed access
_id: '18357'
abstract:
- lang: eng
text: 'This paper explores the problem of similarity criteria between nonrigid shapes.
Broadly speaking, such criteria are divided into intrinsic and extrinsic, the
first referring to the metric structure of the object and the latter to how it
is laid out in the Euclidean space. Both criteria have their advantages and disadvantages:
extrinsic similarity is sensitive to nonrigid deformations, while intrinsic similarity
is sensitive to topological noise. In this paper, we approach the problem from
the perspective of metric geometry. We show that by unifying the extrinsic and
intrinsic similarity criteria, it is possible to obtain a stronger topology-invariant
similarity, suitable for comparing deformed shapes with different topology. We
construct this new joint criterion as a tradeoff between the extrinsic and intrinsic
similarity and use it as a set-valued distance. Numerical results demonstrate
the efficiency of our approach in cases where using either extrinsic or intrinsic
criteria alone would fail.'
article_processing_charge: No
article_type: original
author:
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Michael M.
full_name: Bronstein, Michael M.
last_name: Bronstein
- first_name: Ron
full_name: Kimmel, Ron
last_name: Kimmel
citation:
ama: Bronstein AM, Bronstein MM, Kimmel R. Topology-invariant similarity of nonrigid
shapes. International Journal of Computer Vision. 2009;81(3):281-301. doi:10.1007/s11263-008-0172-2
apa: Bronstein, A. M., Bronstein, M. M., & Kimmel, R. (2009). Topology-invariant
similarity of nonrigid shapes. International Journal of Computer Vision.
Springer Nature. https://doi.org/10.1007/s11263-008-0172-2
chicago: Bronstein, Alex M., Michael M. Bronstein, and Ron Kimmel. “Topology-Invariant
Similarity of Nonrigid Shapes.” International Journal of Computer Vision.
Springer Nature, 2009. https://doi.org/10.1007/s11263-008-0172-2.
ieee: A. M. Bronstein, M. M. Bronstein, and R. Kimmel, “Topology-invariant similarity
of nonrigid shapes,” International Journal of Computer Vision, vol. 81,
no. 3. Springer Nature, pp. 281–301, 2009.
ista: Bronstein AM, Bronstein MM, Kimmel R. 2009. Topology-invariant similarity
of nonrigid shapes. International Journal of Computer Vision. 81(3), 281–301.
mla: Bronstein, Alex M., et al. “Topology-Invariant Similarity of Nonrigid Shapes.”
International Journal of Computer Vision, vol. 81, no. 3, Springer Nature,
2009, pp. 281–301, doi:10.1007/s11263-008-0172-2.
short: A.M. Bronstein, M.M. Bronstein, R. Kimmel, International Journal of Computer
Vision 81 (2009) 281–301.
date_created: 2024-10-15T11:20:54Z
date_published: 2009-03-01T00:00:00Z
date_updated: 2024-10-22T07:27:15Z
day: '01'
doi: 10.1007/s11263-008-0172-2
extern: '1'
intvolume: ' 81'
issue: '3'
language:
- iso: eng
month: '03'
oa_version: None
page: 281-301
publication: International Journal of Computer Vision
publication_identifier:
eissn:
- 1573-1405
issn:
- 0920-5691
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Topology-invariant similarity of nonrigid shapes
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 81
year: '2009'
...
---
OA_type: closed access
_id: '18391'
abstract:
- lang: eng
text: We introduce a design of a coded light-based 3D color video camera optimized
for build up cost as well as accuracy in depth reconstruction and acquisition
speed. The components of the system include a monochromatic camera and an off-the-shelf
LED projector synchronized by a miniature circuit. The projected patterns are
captured and processed at a rate of 200 fps and allow for real-time reconstruction
of both depth and color at video rates. The reconstruction and display are performed
at around 30 depth profiles and color texture per second using a graphics processing
unit (GPU).
article_processing_charge: No
author:
- first_name: O.
full_name: Rubinstein, O.
last_name: Rubinstein
- first_name: Y.
full_name: Honen, Y.
last_name: Honen
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: M. M.
full_name: Bronstein, M. M.
last_name: Bronstein
- first_name: R.
full_name: Kimmel, R.
last_name: Kimmel
citation:
ama: 'Rubinstein O, Honen Y, Bronstein AM, Bronstein MM, Kimmel R. 3D-color video
camera. In: 12th International Conference on Computer Vision Workshops.
IEEE; 2009. doi:10.1109/iccvw.2009.5457433'
apa: 'Rubinstein, O., Honen, Y., Bronstein, A. M., Bronstein, M. M., & Kimmel,
R. (2009). 3D-color video camera. In 12th International Conference on Computer
Vision Workshops. Kyoto, Japan: IEEE. https://doi.org/10.1109/iccvw.2009.5457433'
chicago: Rubinstein, O., Y. Honen, Alex M. Bronstein, M. M. Bronstein, and R. Kimmel.
“3D-Color Video Camera.” In 12th International Conference on Computer Vision
Workshops. IEEE, 2009. https://doi.org/10.1109/iccvw.2009.5457433.
ieee: O. Rubinstein, Y. Honen, A. M. Bronstein, M. M. Bronstein, and R. Kimmel,
“3D-color video camera,” in 12th International Conference on Computer Vision
Workshops, Kyoto, Japan, 2009.
ista: 'Rubinstein O, Honen Y, Bronstein AM, Bronstein MM, Kimmel R. 2009. 3D-color
video camera. 12th International Conference on Computer Vision Workshops. ICCV:
International Conference on Computer Vision.'
mla: Rubinstein, O., et al. “3D-Color Video Camera.” 12th International Conference
on Computer Vision Workshops, IEEE, 2009, doi:10.1109/iccvw.2009.5457433.
short: O. Rubinstein, Y. Honen, A.M. Bronstein, M.M. Bronstein, R. Kimmel, in:,
12th International Conference on Computer Vision Workshops, IEEE, 2009.
conference:
end_date: 2009-10-04
location: Kyoto, Japan
name: 'ICCV: International Conference on Computer Vision'
start_date: 2009-09-27
date_created: 2024-10-15T11:20:54Z
date_published: 2009-10-15T00:00:00Z
date_updated: 2024-11-19T13:00:24Z
day: '15'
doi: 10.1109/iccvw.2009.5457433
extern: '1'
language:
- iso: eng
month: '10'
oa_version: None
publication: 12th International Conference on Computer Vision Workshops
publication_status: published
publisher: IEEE
quality_controlled: '1'
scopus_import: '1'
status: public
title: 3D-color video camera
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2009'
...
---
_id: '18392'
abstract:
- lang: eng
text: Feature-based methods have recently gained popularity in computer vision and
pattern recognition communities, in applications such as object recognition and
image retrieval. In this paper, we explore analogous approaches in the 3D world
applied to the problem of non-rigid shape search and retrieval in large databases.
article_processing_charge: No
author:
- first_name: Maks
full_name: Ovsjanikov, Maks
last_name: Ovsjanikov
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Michael M.
full_name: Bronstein, Michael M.
last_name: Bronstein
- first_name: Leonidas J.
full_name: Guibas, Leonidas J.
last_name: Guibas
citation:
ama: 'Ovsjanikov M, Bronstein AM, Bronstein MM, Guibas LJ. Shape Google: A computer
vision approach to isometry invariant shape retrieval. In: 12th International
Conference on Computer Vision Workshops. IEEE; 2009. doi:10.1109/iccvw.2009.5457682'
apa: 'Ovsjanikov, M., Bronstein, A. M., Bronstein, M. M., & Guibas, L. J. (2009).
Shape Google: A computer vision approach to isometry invariant shape retrieval.
In 12th International Conference on Computer Vision Workshops. Kyoto, Japan:
IEEE. https://doi.org/10.1109/iccvw.2009.5457682'
chicago: 'Ovsjanikov, Maks, Alex M. Bronstein, Michael M. Bronstein, and Leonidas
J. Guibas. “Shape Google: A Computer Vision Approach to Isometry Invariant Shape
Retrieval.” In 12th International Conference on Computer Vision Workshops.
IEEE, 2009. https://doi.org/10.1109/iccvw.2009.5457682.'
ieee: 'M. Ovsjanikov, A. M. Bronstein, M. M. Bronstein, and L. J. Guibas, “Shape
Google: A computer vision approach to isometry invariant shape retrieval,” in
12th International Conference on Computer Vision Workshops, Kyoto, Japan,
2009.'
ista: 'Ovsjanikov M, Bronstein AM, Bronstein MM, Guibas LJ. 2009. Shape Google:
A computer vision approach to isometry invariant shape retrieval. 12th International
Conference on Computer Vision Workshops. ICCV: International Conference on Computer
Vision.'
mla: 'Ovsjanikov, Maks, et al. “Shape Google: A Computer Vision Approach to Isometry
Invariant Shape Retrieval.” 12th International Conference on Computer Vision
Workshops, IEEE, 2009, doi:10.1109/iccvw.2009.5457682.'
short: M. Ovsjanikov, A.M. Bronstein, M.M. Bronstein, L.J. Guibas, in:, 12th International
Conference on Computer Vision Workshops, IEEE, 2009.
conference:
end_date: 2009-10-04
location: Kyoto, Japan
name: 'ICCV: International Conference on Computer Vision'
start_date: 2009-10-27
date_created: 2024-10-15T11:20:54Z
date_published: 2009-11-01T00:00:00Z
date_updated: 2024-11-18T10:38:45Z
day: '01'
doi: 10.1109/iccvw.2009.5457682
extern: '1'
language:
- iso: eng
month: '11'
oa_version: None
publication: 12th International Conference on Computer Vision Workshops
publication_identifier:
isbn:
- '9781424444427'
publication_status: published
publisher: IEEE
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Shape Google: A computer vision approach to isometry invariant shape retrieval'
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2009'
...
---
_id: '18393'
abstract:
- lang: eng
text: Shape-from-X is a generic type of inverse problems in computer vision, in
which a shape is reconstructed from some measurements. A specially challenging
setting of this problem is the case in which the reconstructed shapes are non-rigid.
In this paper, we propose a framework for intrinsic regularization of such problems.
The assumption is that we have the geometric structure of a shape which is intrinsically
(up to bending) similar to the one we would like to reconstruct. For that goal,
we formulate a variation with respect to vertex coordinates of a triangulated
mesh approximating the continuous shape. The numerical core of the proposed method
is based on differentiating the fast marching update step for geodesic distance
computation.
article_processing_charge: No
author:
- first_name: Yohai S.
full_name: Devir, Yohai S.
last_name: Devir
- first_name: Guy
full_name: Rosman, Guy
last_name: Rosman
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Michael M.
full_name: Bronstein, Michael M.
last_name: Bronstein
- first_name: Ron
full_name: Kimmel, Ron
last_name: Kimmel
citation:
ama: 'Devir YS, Rosman G, Bronstein AM, Bronstein MM, Kimmel R. On reconstruction
of non-rigid shapes with intrinsic regularization. In: 12th International Conference
on Computer Vision Workshops. IEEE; 2009. doi:10.1109/iccvw.2009.5457688'
apa: 'Devir, Y. S., Rosman, G., Bronstein, A. M., Bronstein, M. M., & Kimmel,
R. (2009). On reconstruction of non-rigid shapes with intrinsic regularization.
In 12th International Conference on Computer Vision Workshops. Kyoto, Japan:
IEEE. https://doi.org/10.1109/iccvw.2009.5457688'
chicago: Devir, Yohai S., Guy Rosman, Alex M. Bronstein, Michael M. Bronstein, and
Ron Kimmel. “On Reconstruction of Non-Rigid Shapes with Intrinsic Regularization.”
In 12th International Conference on Computer Vision Workshops. IEEE, 2009.
https://doi.org/10.1109/iccvw.2009.5457688.
ieee: Y. S. Devir, G. Rosman, A. M. Bronstein, M. M. Bronstein, and R. Kimmel, “On
reconstruction of non-rigid shapes with intrinsic regularization,” in 12th
International Conference on Computer Vision Workshops, Kyoto, Japan, 2009.
ista: 'Devir YS, Rosman G, Bronstein AM, Bronstein MM, Kimmel R. 2009. On reconstruction
of non-rigid shapes with intrinsic regularization. 12th International Conference
on Computer Vision Workshops. ICCV: International Conference on Computer Vision.'
mla: Devir, Yohai S., et al. “On Reconstruction of Non-Rigid Shapes with Intrinsic
Regularization.” 12th International Conference on Computer Vision Workshops,
IEEE, 2009, doi:10.1109/iccvw.2009.5457688.
short: Y.S. Devir, G. Rosman, A.M. Bronstein, M.M. Bronstein, R. Kimmel, in:, 12th
International Conference on Computer Vision Workshops, IEEE, 2009.
conference:
end_date: 2009-10-04
location: Kyoto, Japan
name: 'ICCV: International Conference on Computer Vision'
start_date: 2009-09-27
date_created: 2024-10-15T11:20:54Z
date_published: 2009-11-01T00:00:00Z
date_updated: 2024-11-18T10:29:12Z
day: '01'
doi: 10.1109/iccvw.2009.5457688
extern: '1'
language:
- iso: eng
month: '11'
oa_version: None
publication: 12th International Conference on Computer Vision Workshops
publication_identifier:
isbn:
- '9781424444427'
publication_status: published
publisher: IEEE
quality_controlled: '1'
scopus_import: '1'
status: public
title: On reconstruction of non-rigid shapes with intrinsic regularization
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2009'
...
---
_id: '18438'
abstract:
- lang: eng
text: 'Partial matching of geometric structures is important in computer vision,
pattern recognition and shape analysis applications. The problem consists of matching
similar parts of shapes that may be dissimilar as a whole. Recently, it was proposed
to consider partial similarity as a multi-criterion optimization problem trying
to simultaneously maximize the similarity and the significance of the matching
parts. A major challenge in that framework is providing a quantitative measure
of the significance of a part of an object. Here, we define the significance of
a part of a shape by its discriminative power with respect do a given shape database
— that is, the uniqueness of the part. We define a point-wise significance density
using a statistical weighting approach similar to the term frequency-inverse document
frequency (tf-idf) weighting employed in search engines. The significance measure
of a given part is obtained by integrating over this density. Numerical experiments
show that the proposed approach produces intuitive significant parts, and demonstrate
an improvement in the performance of partial matching between shapes. '
article_processing_charge: No
author:
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Michael M.
full_name: Bronstein, Michael M.
last_name: Bronstein
- first_name: Yair
full_name: Carmon, Yair
last_name: Carmon
- first_name: Ron
full_name: Kimmel, Ron
last_name: Kimmel
citation:
ama: Bronstein AM, Bronstein MM, Carmon Y, Kimmel R. Partial similarity of shapes
using a statistical significance measure. IPSJ Transactions on Computer Vision
and Applications. 2009;1:105-114. doi:10.2197/ipsjtcva.1.105
apa: Bronstein, A. M., Bronstein, M. M., Carmon, Y., & Kimmel, R. (2009). Partial
similarity of shapes using a statistical significance measure. IPSJ Transactions
on Computer Vision and Applications. Information Processing Society of Japan.
https://doi.org/10.2197/ipsjtcva.1.105
chicago: Bronstein, Alex M., Michael M. Bronstein, Yair Carmon, and Ron Kimmel.
“Partial Similarity of Shapes Using a Statistical Significance Measure.” IPSJ
Transactions on Computer Vision and Applications. Information Processing Society
of Japan, 2009. https://doi.org/10.2197/ipsjtcva.1.105.
ieee: A. M. Bronstein, M. M. Bronstein, Y. Carmon, and R. Kimmel, “Partial similarity
of shapes using a statistical significance measure,” IPSJ Transactions on Computer
Vision and Applications, vol. 1. Information Processing Society of Japan,
pp. 105–114, 2009.
ista: Bronstein AM, Bronstein MM, Carmon Y, Kimmel R. 2009. Partial similarity of
shapes using a statistical significance measure. IPSJ Transactions on Computer
Vision and Applications. 1, 105–114.
mla: Bronstein, Alex M., et al. “Partial Similarity of Shapes Using a Statistical
Significance Measure.” IPSJ Transactions on Computer Vision and Applications,
vol. 1, Information Processing Society of Japan, 2009, pp. 105–14, doi:10.2197/ipsjtcva.1.105.
short: A.M. Bronstein, M.M. Bronstein, Y. Carmon, R. Kimmel, IPSJ Transactions on
Computer Vision and Applications 1 (2009) 105–114.
date_created: 2024-10-15T11:20:55Z
date_published: 2009-03-31T00:00:00Z
date_updated: 2024-12-18T16:01:54Z
day: '31'
doi: 10.2197/ipsjtcva.1.105
extern: '1'
intvolume: ' 1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.2197/ipsjtcva.1.105
month: '03'
oa: 1
oa_version: Published Version
page: 105-114
publication: IPSJ Transactions on Computer Vision and Applications
publication_identifier:
eissn:
- 1882-6695
publication_status: published
publisher: Information Processing Society of Japan
quality_controlled: '1'
scopus_import: '1'
status: public
title: Partial similarity of shapes using a statistical significance measure
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 1
year: '2009'
...
---
_id: '7751'
abstract:
- lang: eng
text: "This work demonstrates that environmental conditions experienced by individuals
can shape their development and affect the stability of genetic associations.
The implication of this observation is that the environmental response may influence
the evolution of traits in the wild. Here, we examined how the genetic architecture
of a suite of sexually dimorphic traits changed as a function of environmental
conditions in an unmanaged population of Soay sheep (Ovis aries) on the island
of Hirta, St. Kilda, northwest Scotland. We examined the stability of phenotypic,
genetic, and environmental (residual) covariance in males during the first year
of life between horn length, body weight, and parasite load in environments of
different quality. We then examined the same covariance structures across environments
within and between the adult sexes. We found significant genotype-by-environment
interactions for lamb male body weight and parasite load, leading to a change
in the genetic correlation among environments. Horn length was genetically correlated
with body weight in males but not females and the genetic correlation among traits
within and between the sexes was dependent upon the environmental conditions experienced
during adulthood. Genetic correlations were smaller in more favorable environmental
conditions, suggesting that in good environments, loci are expressed that have
sex-specific effects. The reduction in genetic correlation between the sexes may
allow independent evolutionary trajectories for each sex. This study demonstrates
that the genetic architecture of traits is not stable under temporally varying
environments and highlights the fact that evolutionary processes may depend largely
upon ecological conditions.\r\nENVIRONMENTAL heterogeneity has long been recognized
as an important factor influencing the evolution of fitness-related traits in
the wild (Roff 2002). The evolution of a trait depends upon the selection upon
it, underlying genetic variation, and to a large degree the genetic relationships
with other traits (Lynch and Walsh 1998). There is evidence that selection can
vary considerably from year to year (Price et al. 1984; Robinson et al. 2008)
and genetic variability in quantitative traits can change in response to environmental
conditions (Hoffmann and Merilä 1999; Charmantier and Garant 2005). However, we
know surprisingly little about the influence of environmental conditions on genetic
correlations between traits in wild populations. Laboratory evidence suggests
that the environment may influence genetic relationships between traits (Sgrò
and Hoffmann 2004), but estimates obtained in a controlled or in an arbitrary
range of conditions show a lack of concordance with those obtained in wild habitats
(Conner et al. 2003). As a result, laboratory and environment-specific estimates
of genetic correlations can make predictions for a trait's evolution, but these
are valid only for the environment in which they were measured. Therefore, at
present, it is difficult to generalize about the evolution of a trait that is
expressed in populations that experience variable environmental conditions (Steppan
et al. 2002).\r\nThe influence of changing environmental conditions on the G matrix
(the matrix of additive genetic variance and covariances corresponding to a set
of traits) has been the focus of theoretical quantitative genetic studies (e.g.,
Jones et al. 2003). There is evidence of genotype-by-environment interaction for
many traits expressed in wild populations (Charmantier and Garant 2005) and thus
we may also expect that associations between traits may depend upon the environmental
conditions encountered by an individual. Genetic correlations among traits may
arise from pleiotropy, where a given locus affects more than one trait (Cheverud
1988; Lynch and Walsh 1998), which may limit the potential for those traits to
evolve independently. There has recently been much interest in assessing genetic
correlations between the sexes (Rice and Chippindale 2001; Foerster et al. 2007;
Poissant et al. 2008), but all of these predictions have also been made in average
environmental conditions. For sexually dimorphic traits, expectations of between-sex
genetic correlations are unclear (Lande 1980; Badyaev 2002). We might expect that
the genetic determination of a trait and the patterns of genetic covariance between
traits may differ both within and between the sexes, producing the differences
in trait growth that are commonly observed (Lande 1980; Badyaev 2002; Roff 2002),
but so far evidence suggests that genetic expression in both sexes is influenced
by the same developmental pathway (Roff 2002; Jensen et al. 2003; Parker and Garant
2005). However, to our knowledge, no study has yet determined whether genetic
correlations, both within and between the sexes, vary across gradients of the
environmental conditions encountered by individuals in the wild (Garant et al.
2008).\r\nThis study aims to assess the stability of phenotypic, genetic, and
environmental (residual) associations between traits, within and between the sexes,
across a range of environmental conditions experienced by a wild population. We
focus on the traits of horn length, body weight, and parasite load in a feral
population of Soay sheep (Ovis aries) from the island of Hirta, St. Kilda, United
Kingdom. Weather conditions, population density, and consequently resource availability
fluctuate from year to year, providing substantial differences between individuals
in the environments they experience and thus their survival rates (Clutton-Brock
and Pemberton 2004). These varying conditions, combined with a large pedigree
and extensive repeated morphological measures, provide an excellent opportunity
to assess the potential effects of environmental heterogeneity on genetic architecture
of traits. Previous studies on this population have shown additive genetic variance
for many morphological traits (Milner et al. 2000; Coltman et al. 2001; Wilson
et al. 2005), genetic correlations between traits (Coltman et al. 2001), and genotype-by-environment
interactions for birth weight (Wilson et al. 2006). Here we apply a random regression
animal model approach to assess the extent to which quantitative genetic parameters
of a range of morphological traits measured during life vary as a function of
environmental conditions. We then extend this methodology to the multivariate
case, testing whether the phenotypic covariance structure, and the underlying
G matrix, depends on the environmental conditions experienced. Since the traits
considered here are known to be sexually dimorphic and there are differences in
trait growth and survival across ages, we look at sex-specific traits in lambs
and then across all ages."
article_processing_charge: No
article_type: original
author:
- first_name: Matthew Richard
full_name: Robinson, Matthew Richard
id: E5D42276-F5DA-11E9-8E24-6303E6697425
last_name: Robinson
orcid: 0000-0001-8982-8813
- first_name: Alastair J.
full_name: Wilson, Alastair J.
last_name: Wilson
- first_name: Jill G.
full_name: Pilkington, Jill G.
last_name: Pilkington
- first_name: Tim H.
full_name: Clutton-Brock, Tim H.
last_name: Clutton-Brock
- first_name: Josephine M.
full_name: Pemberton, Josephine M.
last_name: Pemberton
- first_name: Loeske E. B.
full_name: Kruuk, Loeske E. B.
last_name: Kruuk
citation:
ama: Robinson MR, Wilson AJ, Pilkington JG, Clutton-Brock TH, Pemberton JM, Kruuk
LEB. The impact of environmental heterogeneity on genetic architecture in a wild
population of soay sheep. Genetics. 2009;181(4):1639-1648. doi:10.1534/genetics.108.086801
apa: Robinson, M. R., Wilson, A. J., Pilkington, J. G., Clutton-Brock, T. H., Pemberton,
J. M., & Kruuk, L. E. B. (2009). The impact of environmental heterogeneity
on genetic architecture in a wild population of soay sheep. Genetics. Genetics
Society of America. https://doi.org/10.1534/genetics.108.086801
chicago: Robinson, Matthew Richard, Alastair J. Wilson, Jill G. Pilkington, Tim
H. Clutton-Brock, Josephine M. Pemberton, and Loeske E. B. Kruuk. “The Impact
of Environmental Heterogeneity on Genetic Architecture in a Wild Population of
Soay Sheep.” Genetics. Genetics Society of America, 2009. https://doi.org/10.1534/genetics.108.086801.
ieee: M. R. Robinson, A. J. Wilson, J. G. Pilkington, T. H. Clutton-Brock, J. M.
Pemberton, and L. E. B. Kruuk, “The impact of environmental heterogeneity on genetic
architecture in a wild population of soay sheep,” Genetics, vol. 181, no.
4. Genetics Society of America, pp. 1639–1648, 2009.
ista: Robinson MR, Wilson AJ, Pilkington JG, Clutton-Brock TH, Pemberton JM, Kruuk
LEB. 2009. The impact of environmental heterogeneity on genetic architecture in
a wild population of soay sheep. Genetics. 181(4), 1639–1648.
mla: Robinson, Matthew Richard, et al. “The Impact of Environmental Heterogeneity
on Genetic Architecture in a Wild Population of Soay Sheep.” Genetics,
vol. 181, no. 4, Genetics Society of America, 2009, pp. 1639–48, doi:10.1534/genetics.108.086801.
short: M.R. Robinson, A.J. Wilson, J.G. Pilkington, T.H. Clutton-Brock, J.M. Pemberton,
L.E.B. Kruuk, Genetics 181 (2009) 1639–1648.
date_created: 2020-04-30T11:01:57Z
date_published: 2009-04-01T00:00:00Z
date_updated: 2021-01-12T08:15:17Z
day: '01'
doi: 10.1534/genetics.108.086801
extern: '1'
intvolume: ' 181'
issue: '4'
language:
- iso: eng
month: '04'
oa_version: None
page: 1639-1648
publication: Genetics
publication_identifier:
issn:
- 0016-6731
- 1943-2631
publication_status: published
publisher: Genetics Society of America
quality_controlled: '1'
status: public
title: The impact of environmental heterogeneity on genetic architecture in a wild
population of soay sheep
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 181
year: '2009'
...