---
_id: '17629'
abstract:
- lang: eng
text: We propose an observational test for gravitationally recoiling supermassive
black holes in active galactic nuclei, based on a positive correlation between
the velocities of black holes relative to their host galaxies, |Δv|, and their
obscuring dust column densities, Σdust, both measured along the line of sight.
Our findings using a set of toy models implemented to a Monte Carlo simulation
imply that models of the galactic centre and of recoil dynamics can be tested
by future observations of the potential Σdust–|Δv| correlation. We have also found
that the fraction of obscured quasars decreases with |Δv|, for which the predicted
trend can be compared to the observed fraction of type II quasars, and can further
test combinations of models we may implement.
article_processing_charge: No
article_type: original
author:
- first_name: P.
full_name: Raffai, P.
last_name: Raffai
- first_name: B.
full_name: Bécsy, B.
last_name: Bécsy
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Z.
full_name: Frei, Z.
last_name: Frei
citation:
ama: Raffai P, Bécsy B, Haiman Z, Frei Z. A statistical method for detecting gravitational
recoils of supermassive black holes in active galactic nuclei. Proceedings
of the International Astronomical Union. 2017;12(S324):227-230. doi:10.1017/s1743921317000734
apa: Raffai, P., Bécsy, B., Haiman, Z., & Frei, Z. (2017). A statistical method
for detecting gravitational recoils of supermassive black holes in active galactic
nuclei. Proceedings of the International Astronomical Union. Cambridge
University Press. https://doi.org/10.1017/s1743921317000734
chicago: Raffai, P., B. Bécsy, Zoltán Haiman, and Z. Frei. “A Statistical Method
for Detecting Gravitational Recoils of Supermassive Black Holes in Active Galactic
Nuclei.” Proceedings of the International Astronomical Union. Cambridge
University Press, 2017. https://doi.org/10.1017/s1743921317000734.
ieee: P. Raffai, B. Bécsy, Z. Haiman, and Z. Frei, “A statistical method for detecting
gravitational recoils of supermassive black holes in active galactic nuclei,”
Proceedings of the International Astronomical Union, vol. 12, no. S324.
Cambridge University Press, pp. 227–230, 2017.
ista: Raffai P, Bécsy B, Haiman Z, Frei Z. 2017. A statistical method for detecting
gravitational recoils of supermassive black holes in active galactic nuclei. Proceedings
of the International Astronomical Union. 12(S324), 227–230.
mla: Raffai, P., et al. “A Statistical Method for Detecting Gravitational Recoils
of Supermassive Black Holes in Active Galactic Nuclei.” Proceedings of the
International Astronomical Union, vol. 12, no. S324, Cambridge University
Press, 2017, pp. 227–30, doi:10.1017/s1743921317000734.
short: P. Raffai, B. Bécsy, Z. Haiman, Z. Frei, Proceedings of the International
Astronomical Union 12 (2017) 227–230.
date_created: 2024-09-05T13:58:38Z
date_published: 2017-06-23T00:00:00Z
date_updated: 2024-09-24T09:30:29Z
day: '23'
doi: 10.1017/s1743921317000734
extern: '1'
fulldoi: https://doi.org/10.1017/s1743921317000734
intvolume: ' 12'
issue: S324
language:
- iso: eng
main_file_link:
- url: https://doi.org/10.1017/s1743921317000734
month: '06'
oa_version: None
page: 227-230
publication: Proceedings of the International Astronomical Union
publication_identifier:
issn:
- 1743-9213
- 1743-9221
publication_status: published
publisher: Cambridge University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: A statistical method for detecting gravitational recoils of supermassive black
holes in active galactic nuclei
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 12
year: '2017'
...
---
_id: '17630'
abstract:
- lang: eng
text: In symmetric gravitating systems experiencing rapid mass-loss, particle orbits
change almost instantaneously, which can lead to the development of a sharply
contoured density profile, including singular caustics for collisionless systems.
This framework can be used to model a variety of dynamical systems, such as accretion
discs following a massive black hole merger and dwarf galaxies following violent
early star formation feedback. Particle interactions in the high-density peaks
seem a promising source of observable signatures of these mass-loss events (i.e.
a possible EM counterpart for black hole mergers or strong gamma-ray emission
from dark matter annihilation around young galaxies), because the interaction
rate depends on the square of the density. We study post-mass-loss density profiles,
both analytic and numerical, in idealized cases and present arguments and methods
to extend to any general system. An analytic derivation is presented for particles
on Keplerian orbits responding to a drop in the central mass. We argue that this
case, with initially circular orbits, gives the most sharply contoured profile
possible. We find that despite the presence of a set of singular caustics, the
total particle interaction rate is reduced compared to the unperturbed system;
this is a result of the overall expansion of the system dominating over the steep
caustics. Finally, we argue that this result holds more generally, and the loss
of central mass decreases the particle interaction rate in any physical system.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Zephyr
full_name: Penoyre, Zephyr
last_name: Penoyre
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
citation:
ama: 'Penoyre Z, Haiman Z. A drop in the pond: The effect of rapid mass-loss on
the dynamics and interaction rate of collisionless particles. Monthly Notices
of the Royal Astronomical Society. 2017;473(1):498-512. doi:10.1093/mnras/stx2469'
apa: 'Penoyre, Z., & Haiman, Z. (2017). A drop in the pond: The effect of rapid
mass-loss on the dynamics and interaction rate of collisionless particles. Monthly
Notices of the Royal Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/stx2469'
chicago: 'Penoyre, Zephyr, and Zoltán Haiman. “A Drop in the Pond: The Effect of
Rapid Mass-Loss on the Dynamics and Interaction Rate of Collisionless Particles.”
Monthly Notices of the Royal Astronomical Society. Oxford University Press,
2017. https://doi.org/10.1093/mnras/stx2469.'
ieee: 'Z. Penoyre and Z. Haiman, “A drop in the pond: The effect of rapid mass-loss
on the dynamics and interaction rate of collisionless particles,” Monthly Notices
of the Royal Astronomical Society, vol. 473, no. 1. Oxford University Press,
pp. 498–512, 2017.'
ista: 'Penoyre Z, Haiman Z. 2017. A drop in the pond: The effect of rapid mass-loss
on the dynamics and interaction rate of collisionless particles. Monthly Notices
of the Royal Astronomical Society. 473(1), 498–512.'
mla: 'Penoyre, Zephyr, and Zoltán Haiman. “A Drop in the Pond: The Effect of Rapid
Mass-Loss on the Dynamics and Interaction Rate of Collisionless Particles.” Monthly
Notices of the Royal Astronomical Society, vol. 473, no. 1, Oxford University
Press, 2017, pp. 498–512, doi:10.1093/mnras/stx2469.'
short: Z. Penoyre, Z. Haiman, Monthly Notices of the Royal Astronomical Society
473 (2017) 498–512.
date_created: 2024-09-05T13:59:48Z
date_published: 2017-09-25T00:00:00Z
date_updated: 2024-09-24T09:48:08Z
day: '25'
doi: 10.1093/mnras/stx2469
extern: '1'
external_id:
arxiv:
- '1709.08640'
fulldoi: https://doi.org/10.1093/mnras/stx2469
intvolume: ' 473'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1709.08640'
month: '09'
oa: 1
oa_version: Preprint
page: 498-512
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: 'A drop in the pond: The effect of rapid mass-loss on the dynamics and interaction
rate of collisionless particles'
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 473
year: '2017'
...
---
_id: '17632'
abstract:
- lang: eng
text: 'We assess the contribution of dynamical hardening by direct three-body scattering
interactions to the rate of stellar-mass black hole binary (BHB) mergers in galactic
nuclei. We derive an analytic model for the single-binary encounter rate in a
nucleus with spherical and disc components hosting a super-massive black hole
(SMBH). We determine the total number of encounters NGW needed to harden a BHB
to the point that inspiral due to gravitational wave emission occurs before the
next three-body scattering event. This is done independently for both the spherical
and disc components. Using a Monte Carlo approach, we refine our calculations
for NGW to include gravitational wave emission between scattering events. For
astrophysically plausible models, we find that typically NGW ≲ 10. We find two
separate regimes for the efficient dynamical hardening of BHBs: (1) spherical
star clusters with high central densities, low-velocity dispersions, and no significant
Keplerian component and (2) migration traps in discs around SMBHs lacking any
significant spherical stellar component in the vicinity of the migration trap,
which is expected due to effective orbital inclination reduction of any spherical
population by the disc. We also find a weak correlation between the ratio of the
second-order velocity moment to velocity dispersion in galactic nuclei and the
rate of BHB mergers, where this ratio is a proxy for the ratio between the rotation-
and dispersion-supported components. Because discs enforce planar interactions
that are efficient in hardening BHBs, particularly in migration traps, they have
high merger rates that can contribute significantly to the rate of BHB mergers
detected by the advanced Laser Interferometer Gravitational-Wave Observatory.'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: N W C
full_name: Leigh, N W C
last_name: Leigh
- first_name: A M
full_name: Geller, A M
last_name: Geller
- first_name: B
full_name: McKernan, B
last_name: McKernan
- first_name: K E S
full_name: Ford, K E S
last_name: Ford
- first_name: M-M
full_name: Mac Low, M-M
last_name: Mac Low
- first_name: J
full_name: Bellovary, J
last_name: Bellovary
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: W
full_name: Lyra, W
last_name: Lyra
- first_name: J
full_name: Samsing, J
last_name: Samsing
- first_name: M
full_name: O'Dowd, M
last_name: O'Dowd
- first_name: B
full_name: Kocsis, B
last_name: Kocsis
- first_name: S
full_name: Endlich, S
last_name: Endlich
citation:
ama: Leigh NWC, Geller AM, McKernan B, et al. On the rate of black hole binary mergers
in galactic nuclei due to dynamical hardening. Monthly Notices of the Royal
Astronomical Society. 2017;474(4):5672-5683. doi:10.1093/mnras/stx3134
apa: Leigh, N. W. C., Geller, A. M., McKernan, B., Ford, K. E. S., Mac Low, M.-M.,
Bellovary, J., … Endlich, S. (2017). On the rate of black hole binary mergers
in galactic nuclei due to dynamical hardening. Monthly Notices of the Royal
Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/stx3134
chicago: Leigh, N W C, A M Geller, B McKernan, K E S Ford, M-M Mac Low, J Bellovary,
Zoltán Haiman, et al. “On the Rate of Black Hole Binary Mergers in Galactic Nuclei
Due to Dynamical Hardening.” Monthly Notices of the Royal Astronomical Society.
Oxford University Press, 2017. https://doi.org/10.1093/mnras/stx3134.
ieee: N. W. C. Leigh et al., “On the rate of black hole binary mergers in
galactic nuclei due to dynamical hardening,” Monthly Notices of the Royal Astronomical
Society, vol. 474, no. 4. Oxford University Press, pp. 5672–5683, 2017.
ista: Leigh NWC, Geller AM, McKernan B, Ford KES, Mac Low M-M, Bellovary J, Haiman
Z, Lyra W, Samsing J, O’Dowd M, Kocsis B, Endlich S. 2017. On the rate of black
hole binary mergers in galactic nuclei due to dynamical hardening. Monthly Notices
of the Royal Astronomical Society. 474(4), 5672–5683.
mla: Leigh, N. W. C., et al. “On the Rate of Black Hole Binary Mergers in Galactic
Nuclei Due to Dynamical Hardening.” Monthly Notices of the Royal Astronomical
Society, vol. 474, no. 4, Oxford University Press, 2017, pp. 5672–83, doi:10.1093/mnras/stx3134.
short: N.W.C. Leigh, A.M. Geller, B. McKernan, K.E.S. Ford, M.-M. Mac Low, J. Bellovary,
Z. Haiman, W. Lyra, J. Samsing, M. O’Dowd, B. Kocsis, S. Endlich, Monthly Notices
of the Royal Astronomical Society 474 (2017) 5672–5683.
date_created: 2024-09-05T14:16:03Z
date_published: 2017-12-05T00:00:00Z
date_updated: 2024-09-24T10:21:37Z
day: '05'
doi: 10.1093/mnras/stx3134
extern: '1'
external_id:
arxiv:
- '1711.10494'
fulldoi: https://doi.org/10.1093/mnras/stx3134
intvolume: ' 474'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1711.10494'
month: '12'
oa: 1
oa_version: Preprint
page: 5672-5683
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: On the rate of black hole binary mergers in galactic nuclei due to dynamical
hardening
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 474
year: '2017'
...
---
_id: '17633'
abstract:
- lang: eng
text: 'Using few-body simulations, we investigate the evolution of supermassive
black holes (SMBHs) in galaxies (M* = 1010–1012 M⊙ at z = 0) at 0 < z < 4. Following
galaxy merger trees from the Millennium simulation, we model BH mergers with two
extreme binary decay scenarios for the ‘hard binary’ stage: a full or an empty
loss cone. These two models should bracket the true evolution, and allow us to
separately explore the role of dynamical friction and that of multibody BH interactions
on BH mergers. Using the computed merger rates, we infer the stochastic gravitational
wave background (GWB). Our dynamical approach is a first attempt to study the
dynamical evolution of multiple SMBHs in the host galaxies undergoing mergers
with various mass ratios (10−4 < q* < 1). Our main result demonstrates that SMBH
binaries are able to merge in both scenarios. In the empty loss cone case, we
find that BHs merge via multibody interactions, avoiding the ‘final parsec’ problem,
and entering the pulsar timing arrays band with substantial orbital eccentricity.
Our full loss cone treatment, albeit more approximate, suggests that the eccentricity
becomes even higher when GWs become dominant, leading to rapid coalescences (binary
lifetime ≲1 Gyr). Despite the lower merger rates in the empty loss cone case,
due to their higher mass ratios and lower redshifts, the GWB in the full/empty
loss cone models are comparable (0.70 × 10−15 and 0.53 × 10−15 at a frequency
of 1 yr−1, respectively). Finally, we compute the effects of high eccentricities
on the GWB spectrum.'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Taeho
full_name: Ryu, Taeho
last_name: Ryu
- first_name: Rosalba
full_name: Perna, Rosalba
last_name: Perna
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Jeremiah P.
full_name: Ostriker, Jeremiah P.
last_name: Ostriker
- first_name: Nicholas C.
full_name: Stone, Nicholas C.
last_name: Stone
citation:
ama: 'Ryu T, Perna R, Haiman Z, Ostriker JP, Stone NC. Interactions between multiple
supermassive black holes in galactic nuclei: A solution to the final parsec problem.
Monthly Notices of the Royal Astronomical Society. 2017;473(3):3410-3433.
doi:10.1093/mnras/stx2524'
apa: 'Ryu, T., Perna, R., Haiman, Z., Ostriker, J. P., & Stone, N. C. (2017).
Interactions between multiple supermassive black holes in galactic nuclei: A solution
to the final parsec problem. Monthly Notices of the Royal Astronomical Society.
Oxford University Press. https://doi.org/10.1093/mnras/stx2524'
chicago: 'Ryu, Taeho, Rosalba Perna, Zoltán Haiman, Jeremiah P. Ostriker, and Nicholas
C. Stone. “Interactions between Multiple Supermassive Black Holes in Galactic
Nuclei: A Solution to the Final Parsec Problem.” Monthly Notices of the Royal
Astronomical Society. Oxford University Press, 2017. https://doi.org/10.1093/mnras/stx2524.'
ieee: 'T. Ryu, R. Perna, Z. Haiman, J. P. Ostriker, and N. C. Stone, “Interactions
between multiple supermassive black holes in galactic nuclei: A solution to the
final parsec problem,” Monthly Notices of the Royal Astronomical Society,
vol. 473, no. 3. Oxford University Press, pp. 3410–3433, 2017.'
ista: 'Ryu T, Perna R, Haiman Z, Ostriker JP, Stone NC. 2017. Interactions between
multiple supermassive black holes in galactic nuclei: A solution to the final
parsec problem. Monthly Notices of the Royal Astronomical Society. 473(3), 3410–3433.'
mla: 'Ryu, Taeho, et al. “Interactions between Multiple Supermassive Black Holes
in Galactic Nuclei: A Solution to the Final Parsec Problem.” Monthly Notices
of the Royal Astronomical Society, vol. 473, no. 3, Oxford University Press,
2017, pp. 3410–33, doi:10.1093/mnras/stx2524.'
short: T. Ryu, R. Perna, Z. Haiman, J.P. Ostriker, N.C. Stone, Monthly Notices of
the Royal Astronomical Society 473 (2017) 3410–3433.
date_created: 2024-09-05T14:16:56Z
date_published: 2017-09-27T00:00:00Z
date_updated: 2024-09-24T11:14:57Z
day: '27'
doi: 10.1093/mnras/stx2524
extern: '1'
external_id:
arxiv:
- '1709.06501'
fulldoi: https://doi.org/10.1093/mnras/stx2524
intvolume: ' 473'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1709.06501'
month: '09'
oa: 1
oa_version: Preprint
page: 3410-3433
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: 'Interactions between multiple supermassive black holes in galactic nuclei:
A solution to the final parsec problem'
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 473
year: '2017'
...
---
_id: '17667'
abstract:
- lang: eng
text: The Direct Collapse Black Hole (DCBH) scenario provides a solution for forming
the massive black holes powering bright quasars observed in the early Universe.
A prerequisite for forming a DCBH is that the formation of (much less massive)
Population III stars be avoided - this can be achieved by destroying H2 via Lyman-Werner
(LW) radiation (ELW = 12.6 eV). We find that two conditions must be met in the
proto-galaxy that will host the DCBH. First, prior star formation must be delayed;
this can be achieved with a background LW flux of JBG≳100 J21. Second, an intense
burst of LW radiation from a neighbouring star-bursting proto-galaxy is required,
just before the gas cloud undergoes gravitational collapse, to finally suppress
star formation completely. We show here for the first time using high-resolution
hydrodynamical simulations, including full radiative transfer, that this low-level
background, combined with tight synchronisation and irradiation of a secondary
proto-galaxy by a primary proto-galaxy, inevitably moves the secondary proto-galaxy
onto the isothermal atomic cooling track, without the deleterious effects of either
photo-evaporating the gas or polluting it by heavy elements. These, atomically
cooled, massive proto-galaxies are expected to ultimately form a DCBH of mass
104−105M⊙.
article_number: '0075'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: John A.
full_name: Regan, John A.
last_name: Regan
- first_name: Eli
full_name: Visbal, Eli
last_name: Visbal
- first_name: John H.
full_name: Wise, John H.
last_name: Wise
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Peter H.
full_name: Johansson, Peter H.
last_name: Johansson
- first_name: Greg L.
full_name: Bryan, Greg L.
last_name: Bryan
citation:
ama: Regan JA, Visbal E, Wise JH, Haiman Z, Johansson PH, Bryan GL. Rapid formation
of massive black holes in close proximity to embryonic protogalaxies. Nature
Astronomy. 2017;1(4). doi:10.1038/s41550-017-0075
apa: Regan, J. A., Visbal, E., Wise, J. H., Haiman, Z., Johansson, P. H., &
Bryan, G. L. (2017). Rapid formation of massive black holes in close proximity
to embryonic protogalaxies. Nature Astronomy. Springer Science and Business
Media LLC. https://doi.org/10.1038/s41550-017-0075
chicago: Regan, John A., Eli Visbal, John H. Wise, Zoltán Haiman, Peter H. Johansson,
and Greg L. Bryan. “Rapid Formation of Massive Black Holes in Close Proximity
to Embryonic Protogalaxies.” Nature Astronomy. Springer Science and Business
Media LLC, 2017. https://doi.org/10.1038/s41550-017-0075.
ieee: J. A. Regan, E. Visbal, J. H. Wise, Z. Haiman, P. H. Johansson, and G. L.
Bryan, “Rapid formation of massive black holes in close proximity to embryonic
protogalaxies,” Nature Astronomy, vol. 1, no. 4. Springer Science and Business
Media LLC, 2017.
ista: Regan JA, Visbal E, Wise JH, Haiman Z, Johansson PH, Bryan GL. 2017. Rapid
formation of massive black holes in close proximity to embryonic protogalaxies.
Nature Astronomy. 1(4), 0075.
mla: Regan, John A., et al. “Rapid Formation of Massive Black Holes in Close Proximity
to Embryonic Protogalaxies.” Nature Astronomy, vol. 1, no. 4, 0075, Springer
Science and Business Media LLC, 2017, doi:10.1038/s41550-017-0075.
short: J.A. Regan, E. Visbal, J.H. Wise, Z. Haiman, P.H. Johansson, G.L. Bryan,
Nature Astronomy 1 (2017).
date_created: 2024-09-06T07:45:20Z
date_published: 2017-03-13T00:00:00Z
date_updated: 2024-09-25T07:54:31Z
day: '13'
doi: 10.1038/s41550-017-0075
extern: '1'
external_id:
arxiv:
- '1703.03805'
fulldoi: https://doi.org/10.1038/s41550-017-0075
intvolume: ' 1'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1703.03805'
month: '03'
oa: 1
oa_version: Preprint
publication: Nature Astronomy
publication_identifier:
issn:
- 2397-3366
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
scopus_import: '1'
status: public
title: Rapid formation of massive black holes in close proximity to embryonic protogalaxies
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 1
year: '2017'
...
---
_id: '17668'
abstract:
- lang: eng
text: Suppression of H2-cooling in early protogalaxies has important implications
for the formation of supermassive black holes seeds, the first generation of stars,
and the epoch of reionization. This suppression can occur via photodissociation
of H2 (by ultraviolet Lyman-Werner [LW] photons) or by photodetachment of H-,
a precursor in H2 formation (by infrared [IR] photons). Previous studies have
typically adopted idealised spectra, with a blackbody or a power-law shape, in
modeling the chemistry of metal-free protogalaxies, and utilised a single parameter,
the critical UV flux, or Jcrit, to determine whether H2-cooling is prevented.
This can be misleading, and that independent of the spectral shape, there is a
critical curve in the (kLW , kH^- ) plane, where kLW and kH^- are the H2-dissocation
rates by LW and IR photons, which determines whether a protogalaxy can cool below
~1000 Kelvin. We use a one-zone model to follow the chemical and thermal evolution
of gravitationally collapsing protogalactic gas, to compute this critical curve,
and provide an accurate analytical fit for it. We improve on previous works by
considering a variety of more realistic Pop III or Pop II-type spectra from population
synthesis models and perform fully frequency-dependent calculations of the H2-photodissociation
rates for each spectrum. We compute the ratio kLW/kH^- for each spectrum, as well
as the minimum stellar mass M_star, for various IMFs and metallicities, required
to prevent cooling in a neighboring halo a distance d away. We provide critical
M_star/d2 values for suppression of H2-cooling, with analytic fits, which can
be used in future studies.
article_number: stx167
article_processing_charge: No
article_type: original
author:
- first_name: J.
full_name: Wolcott-Green, J.
last_name: Wolcott-Green
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: G. L.
full_name: Bryan, G. L.
last_name: Bryan
citation:
ama: 'Wolcott-Green J, Haiman Z, Bryan GL. Beyond Jcrit: A critical curve for suppression
of H2-cooling in protogalaxies. Monthly Notices of the Royal Astronomical Society.
2017. doi:10.1093/mnras/stx167'
apa: 'Wolcott-Green, J., Haiman, Z., & Bryan, G. L. (2017). Beyond Jcrit: A
critical curve for suppression of H2-cooling in protogalaxies. Monthly Notices
of the Royal Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/stx167'
chicago: 'Wolcott-Green, J., Zoltán Haiman, and G. L. Bryan. “Beyond Jcrit: A Critical
Curve for Suppression of H2-Cooling in Protogalaxies.” Monthly Notices of the
Royal Astronomical Society. Oxford University Press, 2017. https://doi.org/10.1093/mnras/stx167.'
ieee: 'J. Wolcott-Green, Z. Haiman, and G. L. Bryan, “Beyond Jcrit: A critical curve
for suppression of H2-cooling in protogalaxies,” Monthly Notices of the Royal
Astronomical Society. Oxford University Press, 2017.'
ista: 'Wolcott-Green J, Haiman Z, Bryan GL. 2017. Beyond Jcrit: A critical curve
for suppression of H2-cooling in protogalaxies. Monthly Notices of the Royal Astronomical
Society., stx167.'
mla: 'Wolcott-Green, J., et al. “Beyond Jcrit: A Critical Curve for Suppression
of H2-Cooling in Protogalaxies.” Monthly Notices of the Royal Astronomical
Society, stx167, Oxford University Press, 2017, doi:10.1093/mnras/stx167.'
short: J. Wolcott-Green, Z. Haiman, G.L. Bryan, Monthly Notices of the Royal Astronomical
Society (2017).
date_created: 2024-09-06T07:46:13Z
date_published: 2017-01-20T00:00:00Z
date_updated: 2024-09-25T07:58:06Z
day: '20'
doi: 10.1093/mnras/stx167
extern: '1'
fulldoi: https://doi.org/10.1093/mnras/stx167
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1093/mnras/stx167
month: '01'
oa: 1
oa_version: Published Version
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: 'Beyond Jcrit: A critical curve for suppression of H2-cooling in protogalaxies'
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
year: '2017'
...
---
_id: '17673'
abstract:
- lang: eng
text: Accurate forward modeling of weak lensing (WL) observables from cosmological
parameters is necessary for upcoming galaxy surveys. Because WL probes structures
in the non-linear regime, analytical forward modeling is very challenging, if
not impossible. Numerical simulations of WL features rely on ray-tracing through
the outputs of N-body simulations, which requires knowledge of the gravitational
potential and accurate solvers for light ray trajectories. A less accurate procedure,
based on the Born approximation, only requires knowledge of the density field,
and can be implemented more efficiently and at a lower computational cost. In
this work, we use simulations to show that deviations of the Born-approximated
convergence power spectrum, skewness and kurtosis from their fully ray--traced
counterparts are consistent with the smallest non-trivial O(Φ3) post-Born corrections
(so-called geodesic and lens-lens terms). Our results imply a cancellation among
the larger O(Φ4) (and higher order) terms, consistent with previous analytic work.
We also find that cosmological parameter bias induced by the Born approximated
power spectrum is negligible even for an LSST-like survey, once galaxy shape noise
is considered. When considering higher order statistics such as the κ skewness
and kurtosis, however, we find significant bias of up to 2.5σ. Using the LensTools
software suite, we show that the Born approximation saves a factor of 4 in computing
time with respect to the full ray-tracing in reconstructing the convergence.
article_number: '123503'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Andrea
full_name: Petri, Andrea
last_name: Petri
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Morgan
full_name: May, Morgan
last_name: May
citation:
ama: Petri A, Haiman Z, May M. Validity of the Born approximation for beyond Gaussian
weak lensing observables. Physical Review D. 2017;95(12). doi:10.1103/physrevd.95.123503
apa: Petri, A., Haiman, Z., & May, M. (2017). Validity of the Born approximation
for beyond Gaussian weak lensing observables. Physical Review D. American
Physical Society. https://doi.org/10.1103/physrevd.95.123503
chicago: Petri, Andrea, Zoltán Haiman, and Morgan May. “Validity of the Born Approximation
for beyond Gaussian Weak Lensing Observables.” Physical Review D. American
Physical Society, 2017. https://doi.org/10.1103/physrevd.95.123503.
ieee: A. Petri, Z. Haiman, and M. May, “Validity of the Born approximation for beyond
Gaussian weak lensing observables,” Physical Review D, vol. 95, no. 12.
American Physical Society, 2017.
ista: Petri A, Haiman Z, May M. 2017. Validity of the Born approximation for beyond
Gaussian weak lensing observables. Physical Review D. 95(12), 123503.
mla: Petri, Andrea, et al. “Validity of the Born Approximation for beyond Gaussian
Weak Lensing Observables.” Physical Review D, vol. 95, no. 12, 123503,
American Physical Society, 2017, doi:10.1103/physrevd.95.123503.
short: A. Petri, Z. Haiman, M. May, Physical Review D 95 (2017).
date_created: 2024-09-06T07:50:00Z
date_published: 2017-06-06T00:00:00Z
date_updated: 2024-09-25T08:32:32Z
day: '06'
doi: 10.1103/physrevd.95.123503
extern: '1'
external_id:
arxiv:
- '1612.00852'
fulldoi: https://doi.org/10.1103/physrevd.95.123503
intvolume: ' 95'
issue: '12'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1612.00852'
month: '06'
oa: 1
oa_version: Preprint
publication: Physical Review D
publication_identifier:
issn:
- 2470-0010
- 2470-0029
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Validity of the Born approximation for beyond Gaussian weak lensing observables
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 95
year: '2017'
...
---
_id: '17696'
abstract:
- lang: eng
text: We utilize cosmological hydrodynamic simulations to study the formation of
Population III (Pop III) stars in dark matter halos exposed to strong ionizing
radiation. We simulate the formation of three halos subjected to a wide range
of ionizing fluxes, and find that for high flux, ionization and photoheating can
delay gas collapse and star formation up to halo masses significantly larger than
the atomic cooling threshold. The threshold halo mass at which gas first collapses
and cools increases with ionizing flux for intermediate values, and saturates
at a value approximately an order of magnitude above the atomic cooling threshold
for extremely high flux (e.g. ≈5×108 M⊙ at z≈6). This behavior can be understood
in terms of photoheating, ionization/recombination, and Lyα cooling in the pressure-supported,
self-shielded gas core at the center of the growing dark matter halo. We examine
the spherically-averaged radial velocity profiles of collapsing gas and find that
a gas mass of up to ≈106 M⊙ can reach the central regions within 3 Myr, providing
an upper limit on the amount of massive Pop III stars that can form. The ionizing
radiation increases this limit by a factor of a few compared to strong Lyman-Werner
(LW) radiation alone. We conclude that the bright HeII 1640 Å emission recently
observed from the high-redshift galaxy CR7 cannot be explained by Pop III stars
alone. However, in some halos, a sufficient number of Pop III stars may form to
be detectable with future telescopes such as the James Webb Space Telescope (JWST).
article_processing_charge: No
article_type: original
author:
- first_name: Eli
full_name: Visbal, Eli
last_name: Visbal
- 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: Visbal E, Bryan GL, Haiman Z. What is the maximum mass of a Population III
galaxy? Monthly Notices of the Royal Astronomical Society. 2017;469(2):1456-1465.
doi:10.1093/mnras/stx909
apa: Visbal, E., Bryan, G. L., & Haiman, Z. (2017). What is the maximum mass
of a Population III galaxy? Monthly Notices of the Royal Astronomical Society.
Oxford University Press. https://doi.org/10.1093/mnras/stx909
chicago: Visbal, Eli, Greg L. Bryan, and Zoltán Haiman. “What Is the Maximum Mass
of a Population III Galaxy?” Monthly Notices of the Royal Astronomical Society.
Oxford University Press, 2017. https://doi.org/10.1093/mnras/stx909.
ieee: E. Visbal, G. L. Bryan, and Z. Haiman, “What is the maximum mass of a Population
III galaxy?,” Monthly Notices of the Royal Astronomical Society, vol. 469,
no. 2. Oxford University Press, pp. 1456–1465, 2017.
ista: Visbal E, Bryan GL, Haiman Z. 2017. What is the maximum mass of a Population
III galaxy? Monthly Notices of the Royal Astronomical Society. 469(2), 1456–1465.
mla: Visbal, Eli, et al. “What Is the Maximum Mass of a Population III Galaxy?”
Monthly Notices of the Royal Astronomical Society, vol. 469, no. 2, Oxford
University Press, 2017, pp. 1456–65, doi:10.1093/mnras/stx909.
short: E. Visbal, G.L. Bryan, Z. Haiman, Monthly Notices of the Royal Astronomical
Society 469 (2017) 1456–1465.
date_created: 2024-09-06T08:42:13Z
date_published: 2017-04-17T00:00:00Z
date_updated: 2024-09-25T10:12:10Z
day: '17'
doi: 10.1093/mnras/stx909
extern: '1'
fulldoi: https://doi.org/10.1093/mnras/stx909
intvolume: ' 469'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1093/mnras/stx909
month: '04'
oa: 1
oa_version: Published Version
page: 1456-1465
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: What is the maximum mass of a Population III galaxy?
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 469
year: '2017'
...
---
_id: '17698'
abstract:
- lang: eng
text: 'Gaseous circumbinary accretion discs provide a promising mechanism to facilitate
the mergers of supermassive black holes (SMBHs) in galactic nuclei. We measure
the torques exerted on accreting SMBH binaries, using 2D, isothermal, moving-mesh,
viscous hydrodynamical simulations of circumbinary accretion discs. Our computational
domain includes the entire inner region of the circumbinary disk with the individual
black holes (BHs) included as point masses on the grid and a sink prescription
to model accretion onto each BH. The BHs each acquire their own well-resolved
accretion discs ("minidiscs"). We explore a range of mass removal rates for the
sink prescription removing gas from the central regions of the minidiscs. We find
that the torque exerted on the binary is primarily gravitational, and dominated
by the gas orbiting close behind and ahead of the individual BHs. The torques
from the distorted circumbinary disc farther out and from the direct accretion
of angular momentum are subdominant. The torques are sensitive to the sink prescription:
slower sinks result in more gas accumulating near the BHs and more negative torques,
driving the binary to merger more rapidly. For faster sinks, the torques are less
negative and eventually turn positive (for unphysically fast sinks). When the
minidiscs are modeled as standard alpha discs, our results are insensitive to
the choice of sink radius. Scaling the simulations to a binary orbital period
tbin = 1yr and background disc accretion rate Mdot = 0.3MEdd in Eddington units,
the binary inspirals on a timescale of 3X10^6 years, irrespective of the SMBH
masses. For binaries with total mass <10^7Msun, this is shorter than the inspiral
time due to gravitational wave (GW) emission alone, implying that gas discs will
have a significant impact on the SMBH binary population and can affect the GW
signal for Pulsar Timing Arrays.'
article_processing_charge: No
article_type: original
author:
- first_name: Yike
full_name: Tang, Yike
last_name: Tang
- first_name: Andrew
full_name: MacFadyen, Andrew
last_name: MacFadyen
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
citation:
ama: Tang Y, MacFadyen A, Haiman Z. On the orbital evolution of supermassive black
hole binaries with circumbinary accretion discs. Monthly Notices of the Royal
Astronomical Society. 2017;469(4):4258-4267. doi:10.1093/mnras/stx1130
apa: Tang, Y., MacFadyen, A., & Haiman, Z. (2017). On the orbital evolution
of supermassive black hole binaries with circumbinary accretion discs. Monthly
Notices of the Royal Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/stx1130
chicago: Tang, Yike, Andrew MacFadyen, and Zoltán Haiman. “On the Orbital Evolution
of Supermassive Black Hole Binaries with Circumbinary Accretion Discs.” Monthly
Notices of the Royal Astronomical Society. Oxford University Press, 2017.
https://doi.org/10.1093/mnras/stx1130.
ieee: Y. Tang, A. MacFadyen, and Z. Haiman, “On the orbital evolution of supermassive
black hole binaries with circumbinary accretion discs,” Monthly Notices of
the Royal Astronomical Society, vol. 469, no. 4. Oxford University Press,
pp. 4258–4267, 2017.
ista: Tang Y, MacFadyen A, Haiman Z. 2017. On the orbital evolution of supermassive
black hole binaries with circumbinary accretion discs. Monthly Notices of the
Royal Astronomical Society. 469(4), 4258–4267.
mla: Tang, Yike, et al. “On the Orbital Evolution of Supermassive Black Hole Binaries
with Circumbinary Accretion Discs.” Monthly Notices of the Royal Astronomical
Society, vol. 469, no. 4, Oxford University Press, 2017, pp. 4258–67, doi:10.1093/mnras/stx1130.
short: Y. Tang, A. MacFadyen, Z. Haiman, Monthly Notices of the Royal Astronomical
Society 469 (2017) 4258–4267.
date_created: 2024-09-06T08:44:11Z
date_published: 2017-05-10T00:00:00Z
date_updated: 2024-09-25T11:16:50Z
day: '10'
doi: 10.1093/mnras/stx1130
extern: '1'
fulldoi: https://doi.org/10.1093/mnras/stx1130
intvolume: ' 469'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1093/mnras/stx1130
month: '05'
oa: 1
oa_version: Published Version
page: 4258-4267
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: On the orbital evolution of supermassive black hole binaries with circumbinary
accretion discs
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 469
year: '2017'
...
---
_id: '17706'
abstract:
- lang: eng
text: The Laser Interferometer Gravitational-Wave Observatory, LIGO, found direct
evidence for double black hole binaries emitting gravitational waves. Galactic
nuclei are expected to harbor the densest population of stellar-mass black holes.
A significant fraction (∼30%) of these black holes can reside in binaries. We
examine the fate of the black hole binaries in active galactic nuclei, which get
trapped in the inner region of the accretion disk around the central supermassive
black hole. We show that binary black holes can migrate into and then rapidly
merge within the disk well within a Salpeter time. The binaries may also accrete
a significant amount of gas from the disk, well above the Eddington rate. This
could lead to detectable X-ray or gamma-ray emission, but would require hyper-Eddington
accretion with a few percent radiative efficiency, comparable to thin disks. We
discuss implications for gravitational wave observations and black hole population
studies. We estimate that Advanced LIGO may detect ∼20 such, gas-induced binary
mergers per year.
article_number: '165'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Imre
full_name: Bartos, Imre
last_name: Bartos
- first_name: Bence
full_name: Kocsis, Bence
last_name: Kocsis
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Szabolcs
full_name: Márka, Szabolcs
last_name: Márka
citation:
ama: Bartos I, Kocsis B, Haiman Z, Márka S. Rapid and bright stellar-mass binary
black hole mergers in active galactic nuclei. The Astrophysical Journal.
2017;835(2). doi:10.3847/1538-4357/835/2/165
apa: Bartos, I., Kocsis, B., Haiman, Z., & Márka, S. (2017). Rapid and bright
stellar-mass binary black hole mergers in active galactic nuclei. The Astrophysical
Journal. American Astronomical Society. https://doi.org/10.3847/1538-4357/835/2/165
chicago: Bartos, Imre, Bence Kocsis, Zoltán Haiman, and Szabolcs Márka. “Rapid and
Bright Stellar-Mass Binary Black Hole Mergers in Active Galactic Nuclei.” The
Astrophysical Journal. American Astronomical Society, 2017. https://doi.org/10.3847/1538-4357/835/2/165.
ieee: I. Bartos, B. Kocsis, Z. Haiman, and S. Márka, “Rapid and bright stellar-mass
binary black hole mergers in active galactic nuclei,” The Astrophysical Journal,
vol. 835, no. 2. American Astronomical Society, 2017.
ista: Bartos I, Kocsis B, Haiman Z, Márka S. 2017. Rapid and bright stellar-mass
binary black hole mergers in active galactic nuclei. The Astrophysical Journal.
835(2), 165.
mla: Bartos, Imre, et al. “Rapid and Bright Stellar-Mass Binary Black Hole Mergers
in Active Galactic Nuclei.” The Astrophysical Journal, vol. 835, no. 2,
165, American Astronomical Society, 2017, doi:10.3847/1538-4357/835/2/165.
short: I. Bartos, B. Kocsis, Z. Haiman, S. Márka, The Astrophysical Journal 835
(2017).
date_created: 2024-09-06T08:51:48Z
date_published: 2017-01-27T00:00:00Z
date_updated: 2024-09-25T11:46:08Z
day: '27'
doi: 10.3847/1538-4357/835/2/165
extern: '1'
external_id:
arxiv:
- '1602.03831'
fulldoi: https://doi.org/10.3847/1538-4357/835/2/165
intvolume: ' 835'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1602.03831'
month: '01'
oa: 1
oa_version: Preprint
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: Rapid and bright stellar-mass binary black hole mergers in active galactic
nuclei
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 835
year: '2017'
...
---
_id: '17707'
abstract:
- lang: eng
text: The gravitational waves (GWs) from a binary black hole (BBH) with masses between
10^4 and 10^7 Msun can be detected with the Laser Interferometer Space Antenna
(LISA) once their orbital frequency exceeds 10^-4 - 10^-5 Hz. The binary separation
at this stage is approximately a=100 R_g (gravitational radius), and the orbital
speed is of order v/c=0.1. We argue that at this stage, the binary will be producing
bright electromagnetic (EM) radiation via gas bound to the individual BHs. Both
BHs will have their own photospheres in X-ray and possibly also in optical bands.
Relativistic Doppler modulations and lensing effects will inevitably imprint periodic
variability in the EM light-curve, tracking the phase of the orbital motion, and
serving as a template for the GW inspiral waveform. Advanced localization of the
source by LISA weeks to months prior to merger will enable a measurement of this
EM chirp by wide-field X-ray or optical instruments. A comparison of the phases
of the GW and EM chirp signals will help break degeneracies between system parameters,
and probe a fractional difference difference Delta v in the propagation speed
of photons and gravitons as low as Delta v/c = O(10^-17).
article_number: '023004'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
citation:
ama: 'Haiman Z. Electromagnetic chirp of a compact binary black hole: A phase template
for the gravitational wave inspiral. Physical Review D. 2017;96(2). doi:10.1103/physrevd.96.023004'
apa: 'Haiman, Z. (2017). Electromagnetic chirp of a compact binary black hole: A
phase template for the gravitational wave inspiral. Physical Review D.
American Physical Society. https://doi.org/10.1103/physrevd.96.023004'
chicago: 'Haiman, Zoltán. “Electromagnetic Chirp of a Compact Binary Black Hole:
A Phase Template for the Gravitational Wave Inspiral.” Physical Review D.
American Physical Society, 2017. https://doi.org/10.1103/physrevd.96.023004.'
ieee: 'Z. Haiman, “Electromagnetic chirp of a compact binary black hole: A phase
template for the gravitational wave inspiral,” Physical Review D, vol.
96, no. 2. American Physical Society, 2017.'
ista: 'Haiman Z. 2017. Electromagnetic chirp of a compact binary black hole: A phase
template for the gravitational wave inspiral. Physical Review D. 96(2), 023004.'
mla: 'Haiman, Zoltán. “Electromagnetic Chirp of a Compact Binary Black Hole: A Phase
Template for the Gravitational Wave Inspiral.” Physical Review D, vol.
96, no. 2, 023004, American Physical Society, 2017, doi:10.1103/physrevd.96.023004.'
short: Z. Haiman, Physical Review D 96 (2017).
date_created: 2024-09-06T08:52:28Z
date_published: 2017-07-14T00:00:00Z
date_updated: 2024-09-25T11:53:53Z
day: '14'
doi: 10.1103/physrevd.96.023004
extern: '1'
external_id:
arxiv:
- '1705.06765'
fulldoi: https://doi.org/10.1103/physrevd.96.023004
intvolume: ' 96'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1705.06765'
month: '07'
oa: 1
oa_version: Preprint
publication: Physical Review D
publication_identifier:
issn:
- 2470-0010
- 2470-0029
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Electromagnetic chirp of a compact binary black hole: A phase template for
the gravitational wave inspiral'
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 96
year: '2017'
...
---
_id: '17708'
abstract:
- lang: eng
text: We explore the sensitivity of weak lensing observables to the expansion history
of the universe and to the growth of cosmic structures, as well as the relative
contribution of both effects to constraining cosmological parameters. We utilize
ray-tracing dark-matter-only N-body simulations and validate our technique by
comparing our results for the convergence power spectrum with analytic results
from past studies. We then extend our analysis to non-Gaussian observables which
cannot be easily treated analytically. We study the convergence (equilateral)
bispectrum and two topological observables, lensing peaks and Minkowski functionals,
focusing on their sensitivity to the matter density Ωm and the dark energy equation
of state w. We find that a cancelation between the geometry and growth effects
is a common feature for all observables, and exists at the map level. It weakens
the overall sensitivity by up to a factor of 3 and 1.5 for w and Ωm, respectively,
with the bispectrum worst affected. However, combining geometry and growth information
alleviates the degeneracy between Ωm and w from either effect alone. As a result,
the magnitude of marginalized errors remain similar to those obtained from growth-only
effects, but with the correlation between the two parameters switching sign. These
results shed light on the origin of cosmology-sensitivity of non-Gaussian statistics,
and should be useful in optimizing combinations of observables.
article_number: '023513'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: José Manuel Zorrilla
full_name: Matilla, José Manuel Zorrilla
last_name: Matilla
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Andrea
full_name: Petri, Andrea
last_name: Petri
- first_name: Toshiya
full_name: Namikawa, Toshiya
last_name: Namikawa
citation:
ama: Matilla JMZ, Haiman Z, Petri A, Namikawa T. Geometry and growth contributions
to cosmic shear observables. Physical Review D. 2017;96(2). doi:10.1103/physrevd.96.023513
apa: Matilla, J. M. Z., Haiman, Z., Petri, A., & Namikawa, T. (2017). Geometry
and growth contributions to cosmic shear observables. Physical Review D.
American Physical Society. https://doi.org/10.1103/physrevd.96.023513
chicago: Matilla, José Manuel Zorrilla, Zoltán Haiman, Andrea Petri, and Toshiya
Namikawa. “Geometry and Growth Contributions to Cosmic Shear Observables.” Physical
Review D. American Physical Society, 2017. https://doi.org/10.1103/physrevd.96.023513.
ieee: J. M. Z. Matilla, Z. Haiman, A. Petri, and T. Namikawa, “Geometry and growth
contributions to cosmic shear observables,” Physical Review D, vol. 96,
no. 2. American Physical Society, 2017.
ista: Matilla JMZ, Haiman Z, Petri A, Namikawa T. 2017. Geometry and growth contributions
to cosmic shear observables. Physical Review D. 96(2), 023513.
mla: Matilla, José Manuel Zorrilla, et al. “Geometry and Growth Contributions to
Cosmic Shear Observables.” Physical Review D, vol. 96, no. 2, 023513, American
Physical Society, 2017, doi:10.1103/physrevd.96.023513.
short: J.M.Z. Matilla, Z. Haiman, A. Petri, T. Namikawa, Physical Review D 96 (2017).
date_created: 2024-09-06T08:53:13Z
date_published: 2017-07-13T00:00:00Z
date_updated: 2024-09-25T11:57:15Z
day: '13'
doi: 10.1103/physrevd.96.023513
extern: '1'
external_id:
arxiv:
- '1706.05133'
fulldoi: https://doi.org/10.1103/physrevd.96.023513
intvolume: ' 96'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1706.05133'
month: '07'
oa: 1
oa_version: Preprint
publication: Physical Review D
publication_identifier:
issn:
- 2470-0010
- 2470-0029
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Geometry and growth contributions to cosmic shear observables
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 96
year: '2017'
...
---
_id: '17711'
abstract:
- lang: eng
text: The recent discovery of gravitational waves from stellar-mass binary black
hole mergers by the Laser Interferometer Gravitational-wave Observatory opened
the door to alternative probes of stellar and galactic evolution, cosmology and
fundamental physics. Probing the origin of binary black hole mergers will be difficult
due to the expected lack of electromagnetic emission and limited localization
accuracy. Associations with rare host galaxy types—such as active galactic nuclei—can
nevertheless be identified statistically through spatial correlation. Here we
establish the feasibility of statistically proving the connection between binary
black hole mergers and active galactic nuclei as hosts, even if only a sub-population
of mergers originate from active galactic nuclei. Our results are the demonstration
that the limited localization of gravitational waves, previously written off as
not useful to distinguish progenitor channels, can in fact contribute key information,
broadening the range of astrophysical questions probed by binary black hole observations.
article_number: '831'
article_processing_charge: No
article_type: original
author:
- first_name: I.
full_name: Bartos, I.
last_name: Bartos
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Z.
full_name: Marka, Z.
last_name: Marka
- first_name: B. D.
full_name: Metzger, B. D.
last_name: Metzger
- first_name: N. C.
full_name: Stone, N. C.
last_name: Stone
- first_name: S.
full_name: Marka, S.
last_name: Marka
citation:
ama: Bartos I, Haiman Z, Marka Z, Metzger BD, Stone NC, Marka S. Gravitational-wave
localization alone can probe origin of stellar-mass black hole mergers. Nature
Communications. 2017;8(1). doi:10.1038/s41467-017-00851-7
apa: Bartos, I., Haiman, Z., Marka, Z., Metzger, B. D., Stone, N. C., & Marka,
S. (2017). Gravitational-wave localization alone can probe origin of stellar-mass
black hole mergers. Nature Communications. Springer Science and Business
Media LLC. https://doi.org/10.1038/s41467-017-00851-7
chicago: Bartos, I., Zoltán Haiman, Z. Marka, B. D. Metzger, N. C. Stone, and S.
Marka. “Gravitational-Wave Localization Alone Can Probe Origin of Stellar-Mass
Black Hole Mergers.” Nature Communications. Springer Science and Business
Media LLC, 2017. https://doi.org/10.1038/s41467-017-00851-7.
ieee: I. Bartos, Z. Haiman, Z. Marka, B. D. Metzger, N. C. Stone, and S. Marka,
“Gravitational-wave localization alone can probe origin of stellar-mass black
hole mergers,” Nature Communications, vol. 8, no. 1. Springer Science and
Business Media LLC, 2017.
ista: Bartos I, Haiman Z, Marka Z, Metzger BD, Stone NC, Marka S. 2017. Gravitational-wave
localization alone can probe origin of stellar-mass black hole mergers. Nature
Communications. 8(1), 831.
mla: Bartos, I., et al. “Gravitational-Wave Localization Alone Can Probe Origin
of Stellar-Mass Black Hole Mergers.” Nature Communications, vol. 8, no.
1, 831, Springer Science and Business Media LLC, 2017, doi:10.1038/s41467-017-00851-7.
short: I. Bartos, Z. Haiman, Z. Marka, B.D. Metzger, N.C. Stone, S. Marka, Nature
Communications 8 (2017).
date_created: 2024-09-06T08:55:48Z
date_published: 2017-10-10T00:00:00Z
date_updated: 2024-09-25T12:11:24Z
day: '10'
doi: 10.1038/s41467-017-00851-7
extern: '1'
fulldoi: https://doi.org/10.1038/s41467-017-00851-7
intvolume: ' 8'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1038/s41467-017-00851-7
month: '10'
oa: 1
oa_version: Published Version
publication: Nature Communications
publication_identifier:
issn:
- 2041-1723
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
scopus_import: '1'
status: public
title: Gravitational-wave localization alone can probe origin of stellar-mass black
hole mergers
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 8
year: '2017'
...
---
_id: '17712'
abstract:
- lang: eng
text: Multi-frequency gravitational wave (GW) observations are useful probes of
the formation processes of coalescing stellar-mass binary black holes (BBHs).
We discuss the phase drift in the GW inspiral waveform of the merging BBH caused
by its center-of-mass acceleration. The acceleration strongly depends on the location
where a BBH forms within a galaxy, allowing observations of the early inspiral
phase of LIGO-like BBH mergers by the Laser Interferometer Space Antenna (LISA)
to test the formation mechanism. In particular, BBHs formed in dense nuclear star
clusters or via compact accretion disks around a nuclear supermassive black hole
in active galactic nuclei would suffer strong acceleration, and produce large
phase drifts measurable by LISA. The host galaxies of the coalescing BBHs in these
scenarios can also be uniquely identified in the LISA error volume, without electromagnetic
counterparts. A non-detection of phase drifts would rule out or constrain the
contribution of the nuclear formation channels to the stellar-mass BBH population.
article_number: '063014'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Kohei
full_name: Inayoshi, Kohei
last_name: Inayoshi
- first_name: Nicola
full_name: Tamanini, Nicola
last_name: Tamanini
- first_name: Chiara
full_name: Caprini, Chiara
last_name: Caprini
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
citation:
ama: Inayoshi K, Tamanini N, Caprini C, Haiman Z. Probing stellar binary black hole
formation in galactic nuclei via the imprint of their center of mass acceleration
on their gravitational wave signal. Physical Review D. 2017;96(6). doi:10.1103/physrevd.96.063014
apa: Inayoshi, K., Tamanini, N., Caprini, C., & Haiman, Z. (2017). Probing stellar
binary black hole formation in galactic nuclei via the imprint of their center
of mass acceleration on their gravitational wave signal. Physical Review D.
American Physical Society . https://doi.org/10.1103/physrevd.96.063014
chicago: Inayoshi, Kohei, Nicola Tamanini, Chiara Caprini, and Zoltán Haiman. “Probing
Stellar Binary Black Hole Formation in Galactic Nuclei via the Imprint of Their
Center of Mass Acceleration on Their Gravitational Wave Signal.” Physical Review
D. American Physical Society , 2017. https://doi.org/10.1103/physrevd.96.063014.
ieee: K. Inayoshi, N. Tamanini, C. Caprini, and Z. Haiman, “Probing stellar binary
black hole formation in galactic nuclei via the imprint of their center of mass
acceleration on their gravitational wave signal,” Physical Review D, vol.
96, no. 6. American Physical Society , 2017.
ista: Inayoshi K, Tamanini N, Caprini C, Haiman Z. 2017. Probing stellar binary
black hole formation in galactic nuclei via the imprint of their center of mass
acceleration on their gravitational wave signal. Physical Review D. 96(6), 063014.
mla: Inayoshi, Kohei, et al. “Probing Stellar Binary Black Hole Formation in Galactic
Nuclei via the Imprint of Their Center of Mass Acceleration on Their Gravitational
Wave Signal.” Physical Review D, vol. 96, no. 6, 063014, American Physical
Society , 2017, doi:10.1103/physrevd.96.063014.
short: K. Inayoshi, N. Tamanini, C. Caprini, Z. Haiman, Physical Review D 96 (2017).
date_created: 2024-09-06T08:56:32Z
date_published: 2017-09-25T00:00:00Z
date_updated: 2024-09-25T12:15:34Z
day: '25'
doi: 10.1103/physrevd.96.063014
extern: '1'
external_id:
arxiv:
- '1702.06529'
fulldoi: https://doi.org/10.1103/physrevd.96.063014
intvolume: ' 96'
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1702.06529'
month: '09'
oa: 1
oa_version: Preprint
publication: Physical Review D
publication_identifier:
issn:
- 2470-0010
- 2470-0029
publication_status: published
publisher: 'American Physical Society '
quality_controlled: '1'
scopus_import: '1'
status: public
title: Probing stellar binary black hole formation in galactic nuclei via the imprint
of their center of mass acceleration on their gravitational wave signal
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 96
year: '2017'
...
---
OA_type: closed access
_id: '17936'
abstract:
- lang: eng
text: We report that the single‐molecule junction conductance of thiol‐terminated
silanes with Ag electrodes are higher than the conductance of those formed with
Au electrodes. These results are in contrast to the trends in the metal work function
Φ(Ag)<Φ(Au). As such, a better alignment of the Au Fermi level to the molecular
orbital of silane that mediates charge transport would be expected. This conductance
trend is reversed when we replace the thiols with amines, highlighting the impact
of metal–S covalent and metal–NH2 dative bonds in controlling
the molecular conductance. Density functional theory calculations elucidate the
crucial role of the chemical linkers in determining the level alignment when molecules
are attached to different metal contacts. We also demonstrate that conductance
of thiol‐terminated silanes with Pt electrodes is lower than the ones formed with
Au and Ag electrodes, again in contrast to the trends in the metal work‐functions.
article_processing_charge: No
article_type: letter_note
author:
- first_name: Haixing
full_name: Li, Haixing
last_name: Li
- first_name: Timothy A.
full_name: Su, Timothy A.
last_name: Su
- first_name: María
full_name: Camarasa‐Gómez, María
last_name: Camarasa‐Gómez
- first_name: Daniel
full_name: Hernangómez‐Pérez, Daniel
last_name: Hernangómez‐Pérez
- first_name: Simon E.
full_name: Henn, Simon E.
last_name: Henn
- first_name: Vladislav
full_name: Pokorný, Vladislav
last_name: Pokorný
- first_name: Caravaggio D.
full_name: Caniglia, Caravaggio D.
last_name: Caniglia
- first_name: Michael S.
full_name: Inkpen, Michael S.
last_name: Inkpen
- first_name: Richard
full_name: Korytár, Richard
last_name: Korytár
- first_name: Michael L.
full_name: Steigerwald, Michael L.
last_name: Steigerwald
- first_name: Colin
full_name: Nuckolls, Colin
last_name: Nuckolls
- first_name: Ferdinand
full_name: Evers, Ferdinand
last_name: Evers
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
citation:
ama: Li H, Su TA, Camarasa‐Gómez M, et al. Silver makes better eElectrical contacts
to thiol‐terminated silanes than Gold. Angewandte Chemie International Edition.
2017;56(45):14145-14148. doi:10.1002/anie.201708524
apa: Li, H., Su, T. A., Camarasa‐Gómez, M., Hernangómez‐Pérez, D., Henn, S. E.,
Pokorný, V., … Venkataraman, L. (2017). Silver makes better eElectrical contacts
to thiol‐terminated silanes than Gold. Angewandte Chemie International Edition.
Wiley. https://doi.org/10.1002/anie.201708524
chicago: Li, Haixing, Timothy A. Su, María Camarasa‐Gómez, Daniel Hernangómez‐Pérez,
Simon E. Henn, Vladislav Pokorný, Caravaggio D. Caniglia, et al. “Silver Makes
Better EElectrical Contacts to Thiol‐terminated Silanes than Gold.” Angewandte
Chemie International Edition. Wiley, 2017. https://doi.org/10.1002/anie.201708524.
ieee: H. Li et al., “Silver makes better eElectrical contacts to thiol‐terminated
silanes than Gold,” Angewandte Chemie International Edition, vol. 56, no.
45. Wiley, pp. 14145–14148, 2017.
ista: Li H, Su TA, Camarasa‐Gómez M, Hernangómez‐Pérez D, Henn SE, Pokorný V, Caniglia
CD, Inkpen MS, Korytár R, Steigerwald ML, Nuckolls C, Evers F, Venkataraman L.
2017. Silver makes better eElectrical contacts to thiol‐terminated silanes than
Gold. Angewandte Chemie International Edition. 56(45), 14145–14148.
mla: Li, Haixing, et al. “Silver Makes Better EElectrical Contacts to Thiol‐terminated
Silanes than Gold.” Angewandte Chemie International Edition, vol. 56, no.
45, Wiley, 2017, pp. 14145–48, doi:10.1002/anie.201708524.
short: H. Li, T.A. Su, M. Camarasa‐Gómez, D. Hernangómez‐Pérez, S.E. Henn, V. Pokorný,
C.D. Caniglia, M.S. Inkpen, R. Korytár, M.L. Steigerwald, C. Nuckolls, F. Evers,
L. Venkataraman, Angewandte Chemie International Edition 56 (2017) 14145–14148.
date_created: 2024-09-09T08:45:32Z
date_published: 2017-11-06T00:00:00Z
date_updated: 2024-12-17T10:06:36Z
day: '06'
doi: 10.1002/anie.201708524
extern: '1'
fulldoi: https://doi.org/10.1002/anie.201708524
intvolume: ' 56'
issue: '45'
language:
- iso: eng
month: '11'
oa_version: None
page: 14145-14148
publication: Angewandte Chemie International Edition
publication_identifier:
eissn:
- 1521-3773
issn:
- 1433-7851
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: Silver makes better eElectrical contacts to thiol‐terminated silanes than Gold
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 56
year: '2017'
...
---
OA_type: closed access
_id: '17937'
abstract:
- lang: eng
text: Fabricating nanoscopic devices capable of manipulating and processing single
units of charge is an essential step towards creating functional devices where
quantum effects dominate transport characteristics. The archetypal single-electron
transistor comprises a small conducting or semiconducting island separated from
two metallic reservoirs by insulating barriers1,2,3,4,5. By enabling the transfer
of a well-defined number of charge carriers between the island and the reservoirs,
such a device may enable discrete single-electron operations6,7,8,9. Here, we
describe a single-molecule junction comprising a redox-active, atomically precise
cobalt chalcogenide cluster wired between two nanoscopic electrodes10,11. We observe
current blockade at room temperature in thousands of single-cluster junctions.
Below a threshold voltage, charge transfer across the junction is suppressed.
The device is turned on when the temporary occupation of the core states by a
transiting carrier is energetically enabled, resulting in a sequential tunnelling
process and an increase in current by a factor of ∼600. We perform in situ and
ex situ cyclic voltammetry as well as density functional theory calculations to
unveil a two-step process mediated by an orbital localized on the core of the
cluster in which charge carriers reside before tunnelling to the collector reservoir.
As the bias window of the junction is opened wide enough to include one of the
cluster frontier orbitals, the current blockade is lifted and charge carriers
can tunnel sequentially across the junction.
article_processing_charge: No
article_type: original
author:
- first_name: Giacomo
full_name: Lovat, Giacomo
last_name: Lovat
- first_name: Bonnie
full_name: Choi, Bonnie
last_name: Choi
- first_name: Daniel W.
full_name: Paley, Daniel W.
last_name: Paley
- first_name: Michael L.
full_name: Steigerwald, Michael L.
last_name: Steigerwald
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
- first_name: Xavier
full_name: Roy, Xavier
last_name: Roy
citation:
ama: Lovat G, Choi B, Paley DW, Steigerwald ML, Venkataraman L, Roy X. Room-temperature
current blockade in atomically defined single-cluster junctions. Nature Nanotechnology.
2017;12:1050-1054. doi:10.1038/nnano.2017.156
apa: Lovat, G., Choi, B., Paley, D. W., Steigerwald, M. L., Venkataraman, L., &
Roy, X. (2017). Room-temperature current blockade in atomically defined single-cluster
junctions. Nature Nanotechnology. Springer Nature. https://doi.org/10.1038/nnano.2017.156
chicago: Lovat, Giacomo, Bonnie Choi, Daniel W. Paley, Michael L. Steigerwald, Latha
Venkataraman, and Xavier Roy. “Room-Temperature Current Blockade in Atomically
Defined Single-Cluster Junctions.” Nature Nanotechnology. Springer Nature,
2017. https://doi.org/10.1038/nnano.2017.156.
ieee: G. Lovat, B. Choi, D. W. Paley, M. L. Steigerwald, L. Venkataraman, and X.
Roy, “Room-temperature current blockade in atomically defined single-cluster junctions,”
Nature Nanotechnology, vol. 12. Springer Nature, pp. 1050–1054, 2017.
ista: Lovat G, Choi B, Paley DW, Steigerwald ML, Venkataraman L, Roy X. 2017. Room-temperature
current blockade in atomically defined single-cluster junctions. Nature Nanotechnology.
12, 1050–1054.
mla: Lovat, Giacomo, et al. “Room-Temperature Current Blockade in Atomically Defined
Single-Cluster Junctions.” Nature Nanotechnology, vol. 12, Springer Nature,
2017, pp. 1050–54, doi:10.1038/nnano.2017.156.
short: G. Lovat, B. Choi, D.W. Paley, M.L. Steigerwald, L. Venkataraman, X. Roy,
Nature Nanotechnology 12 (2017) 1050–1054.
date_created: 2024-09-09T08:46:15Z
date_published: 2017-11-01T00:00:00Z
date_updated: 2024-12-17T10:09:35Z
day: '01'
doi: 10.1038/nnano.2017.156
extern: '1'
external_id:
pmid:
- '28805817'
fulldoi: https://doi.org/10.1038/nnano.2017.156
intvolume: ' 12'
language:
- iso: eng
month: '11'
oa_version: None
page: 1050-1054
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: Room-temperature current blockade in atomically defined single-cluster junctions
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 12
year: '2017'
...
---
OA_type: closed access
_id: '17939'
abstract:
- lang: eng
text: We report a series of single-molecule transport measurements carried out in
an ionic environment with oligophenylenediamine wires. These molecules exhibit
three discrete conducting states accessed by electrochemically modifying the contacts.
Transport in these junctions is defined by the oligophenylene backbone, but the
conductance is increased by factors of ∼20 and ∼400 when compared to traditional
dative junctions. We propose that the higher-conducting states arise from in situ
electrochemical conversion of the dative Au←N bond into a new type of Au–N contact.
Density functional theory-based transport calculations establish that the new
contacts dramatically increase the electronic coupling of the oligophenylene backbone
to the Au electrodes, consistent with experimental transport data. The resulting
contact resistance is the lowest reported to date; more generally, our work demonstrates
a facile method for creating electronically transparent metal–organic interfaces.
article_processing_charge: No
article_type: letter_note
author:
- first_name: Yaping
full_name: Zang, Yaping
last_name: Zang
- first_name: Andrew
full_name: Pinkard, Andrew
last_name: Pinkard
- first_name: Zhen-Fei
full_name: Liu, Zhen-Fei
last_name: Liu
- first_name: Jeffrey B.
full_name: Neaton, Jeffrey B.
last_name: Neaton
- first_name: Michael L.
full_name: Steigerwald, Michael L.
last_name: Steigerwald
- first_name: Xavier
full_name: Roy, Xavier
last_name: Roy
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
citation:
ama: Zang Y, Pinkard A, Liu Z-F, et al. Electronically transparent Au–N bonds for
molecular junctions. Journal of the American Chemical Society. 2017;139(42):14845-14848.
doi:10.1021/jacs.7b08370
apa: Zang, Y., Pinkard, A., Liu, Z.-F., Neaton, J. B., Steigerwald, M. L., Roy,
X., & Venkataraman, L. (2017). Electronically transparent Au–N bonds for molecular
junctions. Journal of the American Chemical Society. American Chemical
Society. https://doi.org/10.1021/jacs.7b08370
chicago: Zang, Yaping, Andrew Pinkard, Zhen-Fei Liu, Jeffrey B. Neaton, Michael
L. Steigerwald, Xavier Roy, and Latha Venkataraman. “Electronically Transparent
Au–N Bonds for Molecular Junctions.” Journal of the American Chemical Society.
American Chemical Society, 2017. https://doi.org/10.1021/jacs.7b08370.
ieee: Y. Zang et al., “Electronically transparent Au–N bonds for molecular
junctions,” Journal of the American Chemical Society, vol. 139, no. 42.
American Chemical Society, pp. 14845–14848, 2017.
ista: Zang Y, Pinkard A, Liu Z-F, Neaton JB, Steigerwald ML, Roy X, Venkataraman
L. 2017. Electronically transparent Au–N bonds for molecular junctions. Journal
of the American Chemical Society. 139(42), 14845–14848.
mla: Zang, Yaping, et al. “Electronically Transparent Au–N Bonds for Molecular Junctions.”
Journal of the American Chemical Society, vol. 139, no. 42, American Chemical
Society, 2017, pp. 14845–48, doi:10.1021/jacs.7b08370.
short: Y. Zang, A. Pinkard, Z.-F. Liu, J.B. Neaton, M.L. Steigerwald, X. Roy, L.
Venkataraman, Journal of the American Chemical Society 139 (2017) 14845–14848.
date_created: 2024-09-09T08:47:04Z
date_published: 2017-10-05T00:00:00Z
date_updated: 2024-12-17T10:13:56Z
day: '05'
doi: 10.1021/jacs.7b08370
extern: '1'
external_id:
pmid:
- '28981277'
fulldoi: https://doi.org/10.1021/jacs.7b08370
intvolume: ' 139'
issue: '42'
language:
- iso: eng
month: '10'
oa_version: None
page: 14845-14848
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: Electronically transparent Au–N bonds for molecular junctions
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 139
year: '2017'
...
---
OA_type: closed access
_id: '17940'
abstract:
- lang: eng
text: Single-molecule conductance studies have traditionally focused on creating
highly conducting molecular wires. However, progress in nanoscale electronics
demands insulators just as it needs conductors. Here we describe the single-molecule
length-dependent conductance properties of the classic silicon dioxide insulator.
We synthesize molecular wires consisting of Si–O repeat units and measure their
conductance through the scanning tunneling microscope-based break-junction method.
These molecules yield conductance lower than alkanes of the same length and the
largest length-dependent conductance decay of any molecular systems measured to
date. We calculate single-molecule junction transmission and the complex band
structure of the infinite 1D material for siloxane, in comparison with silane
and alkane, and show that the large conductance decay is intrinsic to the nature
of the Si–O bond. This work highlights the potential for siloxanes to function
as molecular insulators in electronics.
article_processing_charge: No
article_type: original
author:
- first_name: Haixing
full_name: Li, Haixing
last_name: Li
- first_name: Marc H.
full_name: Garner, Marc H.
last_name: Garner
- first_name: Timothy A.
full_name: Su, Timothy A.
last_name: Su
- first_name: Anders
full_name: Jensen, Anders
last_name: Jensen
- first_name: Michael S.
full_name: Inkpen, Michael S.
last_name: Inkpen
- first_name: Michael L.
full_name: Steigerwald, Michael L.
last_name: Steigerwald
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
- first_name: Gemma C.
full_name: Solomon, Gemma C.
last_name: Solomon
- first_name: Colin
full_name: Nuckolls, Colin
last_name: Nuckolls
citation:
ama: Li H, Garner MH, Su TA, et al. Extreme conductance suppression in molecular
siloxanes. Journal of the American Chemical Society. 2017;139(30):10212-10215.
doi:10.1021/jacs.7b05599
apa: Li, H., Garner, M. H., Su, T. A., Jensen, A., Inkpen, M. S., Steigerwald, M.
L., … Nuckolls, C. (2017). Extreme conductance suppression in molecular siloxanes.
Journal of the American Chemical Society. American Chemical Society. https://doi.org/10.1021/jacs.7b05599
chicago: Li, Haixing, Marc H. Garner, Timothy A. Su, Anders Jensen, Michael S. Inkpen,
Michael L. Steigerwald, Latha Venkataraman, Gemma C. Solomon, and Colin Nuckolls.
“Extreme Conductance Suppression in Molecular Siloxanes.” Journal of the American
Chemical Society. American Chemical Society, 2017. https://doi.org/10.1021/jacs.7b05599.
ieee: H. Li et al., “Extreme conductance suppression in molecular siloxanes,”
Journal of the American Chemical Society, vol. 139, no. 30. American Chemical
Society, pp. 10212–10215, 2017.
ista: Li H, Garner MH, Su TA, Jensen A, Inkpen MS, Steigerwald ML, Venkataraman
L, Solomon GC, Nuckolls C. 2017. Extreme conductance suppression in molecular
siloxanes. Journal of the American Chemical Society. 139(30), 10212–10215.
mla: Li, Haixing, et al. “Extreme Conductance Suppression in Molecular Siloxanes.”
Journal of the American Chemical Society, vol. 139, no. 30, American Chemical
Society, 2017, pp. 10212–15, doi:10.1021/jacs.7b05599.
short: H. Li, M.H. Garner, T.A. Su, A. Jensen, M.S. Inkpen, M.L. Steigerwald, L.
Venkataraman, G.C. Solomon, C. Nuckolls, Journal of the American Chemical Society
139 (2017) 10212–10215.
date_created: 2024-09-09T08:48:28Z
date_published: 2017-07-13T00:00:00Z
date_updated: 2024-12-18T07:27:18Z
day: '13'
doi: 10.1021/jacs.7b05599
extern: '1'
external_id:
pmid:
- '28702995'
fulldoi: https://doi.org/10.1021/jacs.7b05599
intvolume: ' 139'
issue: '30'
language:
- iso: eng
month: '07'
oa_version: None
page: 10212-10215
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: Extreme conductance suppression in molecular siloxanes
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 139
year: '2017'
...
---
OA_type: closed access
_id: '17941'
abstract:
- lang: eng
text: How heteroatomic substitutions affect electron transport through π-conjugated
hydrocarbons has been the subject of some debate. In this paper we investigate
the effect of heteroatomic linkers in a molecular junction on the electron-transmission
spectrum, focusing on the occurrence of quantum interference (QI) close to the
Fermi level, where conductivity can be significantly suppressed. We find that
the substitution or addition of heteroatoms to a carbon skeleton at the contact
positions does not change the main feature of QI due to the underlying carbon
skeleton. QI in the overall system thus remains a robust feature. This empirical
observation leads us to derive, in two mathematical ways, that these findings
can be generalized. We note that addition or substitution of a carbon atom by
a heteroatom at the contact positions will increase or decrease the number of
electrons in the π-system, which will lead to a change in the alignment of the
molecular orbitals of the isolated system relative to the electrode Fermi level.
Both Hückel and density functional theory calculations on model systems probe
the effect of this Fermi level change and confirm qualitatively the implications
of the underlying mathematical proofs.
article_processing_charge: No
article_type: original
author:
- first_name: Yuta
full_name: Tsuji, Yuta
last_name: Tsuji
- first_name: Thijs
full_name: Stuyver, Thijs
last_name: Stuyver
- first_name: Suman
full_name: Gunasekaran, Suman
last_name: Gunasekaran
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
citation:
ama: 'Tsuji Y, Stuyver T, Gunasekaran S, Venkataraman L. The influence of linkers
on quantum interference: A linker theorem. The Journal of Physical Chemistry
C. 2017;121(27):14451-14462. doi:10.1021/acs.jpcc.7b03493'
apa: 'Tsuji, Y., Stuyver, T., Gunasekaran, S., & Venkataraman, L. (2017). The
influence of linkers on quantum interference: A linker theorem. The Journal
of Physical Chemistry C. American Chemical Society. https://doi.org/10.1021/acs.jpcc.7b03493'
chicago: 'Tsuji, Yuta, Thijs Stuyver, Suman Gunasekaran, and Latha Venkataraman.
“The Influence of Linkers on Quantum Interference: A Linker Theorem.” The Journal
of Physical Chemistry C. American Chemical Society, 2017. https://doi.org/10.1021/acs.jpcc.7b03493.'
ieee: 'Y. Tsuji, T. Stuyver, S. Gunasekaran, and L. Venkataraman, “The influence
of linkers on quantum interference: A linker theorem,” The Journal of Physical
Chemistry C, vol. 121, no. 27. American Chemical Society, pp. 14451–14462,
2017.'
ista: 'Tsuji Y, Stuyver T, Gunasekaran S, Venkataraman L. 2017. The influence of
linkers on quantum interference: A linker theorem. The Journal of Physical Chemistry
C. 121(27), 14451–14462.'
mla: 'Tsuji, Yuta, et al. “The Influence of Linkers on Quantum Interference: A Linker
Theorem.” The Journal of Physical Chemistry C, vol. 121, no. 27, American
Chemical Society, 2017, pp. 14451–62, doi:10.1021/acs.jpcc.7b03493.'
short: Y. Tsuji, T. Stuyver, S. Gunasekaran, L. Venkataraman, The Journal of Physical
Chemistry C 121 (2017) 14451–14462.
date_created: 2024-09-09T08:49:27Z
date_published: 2017-06-09T00:00:00Z
date_updated: 2024-12-18T07:29:42Z
day: '09'
doi: 10.1021/acs.jpcc.7b03493
extern: '1'
fulldoi: https://doi.org/10.1021/acs.jpcc.7b03493
intvolume: ' 121'
issue: '27'
language:
- iso: eng
month: '06'
oa_version: None
page: 14451-14462
publication: The Journal of Physical Chemistry C
publication_identifier:
eissn:
- 1932-7455
issn:
- 1932-7447
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'The influence of linkers on quantum interference: A linker theorem'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 121
year: '2017'
...
---
OA_type: closed access
_id: '17942'
abstract:
- lang: eng
text: Quantum interference effects, whether constructive or destructive, are key
to predicting and understanding the electrical conductance of single molecules.
Here, through theory and experiment, we investigate a family of benzene-like molecules
that exhibit both constructive and destructive interference effects arising due
to more than one contact between the molecule and each electrode. In particular,
we demonstrate that the π-system of meta-coupled benzene can exhibit constructive
interference and its para-coupled analog can exhibit destructive interference,
and vice versa, depending on the specific through-space interactions. As a peculiarity,
this allows a meta-coupled benzene molecule to exhibit higher conductance than
a para-coupled benzene. Our results provide design principles for molecular electronic
components with high sensitivity to through-space interactions and demonstrate
that increasing the number of contacts between the molecule and electrodes can
both increase and decrease the conductance.
article_processing_charge: No
article_type: letter_note
author:
- first_name: Anders
full_name: Borges, Anders
last_name: Borges
- first_name: Jianlong
full_name: Xia, Jianlong
last_name: Xia
- first_name: Sheng Hua
full_name: Liu, Sheng Hua
last_name: Liu
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
- first_name: Gemma C.
full_name: Solomon, Gemma C.
last_name: Solomon
citation:
ama: Borges A, Xia J, Liu SH, Venkataraman L, Solomon GC. The role of through-space
interactions in modulating constructive and destructive interference effects in
benzene. Nano Letters. 2017;17(7):4436-4442. doi:10.1021/acs.nanolett.7b01592
apa: Borges, A., Xia, J., Liu, S. H., Venkataraman, L., & Solomon, G. C. (2017).
The role of through-space interactions in modulating constructive and destructive
interference effects in benzene. Nano Letters. American Chemical Society.
https://doi.org/10.1021/acs.nanolett.7b01592
chicago: Borges, Anders, Jianlong Xia, Sheng Hua Liu, Latha Venkataraman, and Gemma
C. Solomon. “The Role of Through-Space Interactions in Modulating Constructive
and Destructive Interference Effects in Benzene.” Nano Letters. American
Chemical Society, 2017. https://doi.org/10.1021/acs.nanolett.7b01592.
ieee: A. Borges, J. Xia, S. H. Liu, L. Venkataraman, and G. C. Solomon, “The role
of through-space interactions in modulating constructive and destructive interference
effects in benzene,” Nano Letters, vol. 17, no. 7. American Chemical Society,
pp. 4436–4442, 2017.
ista: Borges A, Xia J, Liu SH, Venkataraman L, Solomon GC. 2017. The role of through-space
interactions in modulating constructive and destructive interference effects in
benzene. Nano Letters. 17(7), 4436–4442.
mla: Borges, Anders, et al. “The Role of Through-Space Interactions in Modulating
Constructive and Destructive Interference Effects in Benzene.” Nano Letters,
vol. 17, no. 7, American Chemical Society, 2017, pp. 4436–42, doi:10.1021/acs.nanolett.7b01592.
short: A. Borges, J. Xia, S.H. Liu, L. Venkataraman, G.C. Solomon, Nano Letters
17 (2017) 4436–4442.
date_created: 2024-09-09T08:50:14Z
date_published: 2017-06-26T00:00:00Z
date_updated: 2024-12-18T07:32:14Z
day: '26'
doi: 10.1021/acs.nanolett.7b01592
extern: '1'
external_id:
pmid:
- '28650176'
fulldoi: https://doi.org/10.1021/acs.nanolett.7b01592
intvolume: ' 17'
issue: '7'
language:
- iso: eng
month: '06'
oa_version: None
page: 4436-4442
pmid: 1
publication: Nano Letters
publication_identifier:
eissn:
- 1530-6992
issn:
- 1530-6984
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: The role of through-space interactions in modulating constructive and destructive
interference effects in benzene
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 17
year: '2017'
...