@article{370,
  abstract     = {Copper-based chalcogenides that comprise abundant, low-cost, and environmental friendly elements are excellent materials for a number of energy conversion applications, including photovoltaics, photocatalysis, and thermoelectrics (TE). In such applications, the use of solution-processed nanocrystals (NCs) to produce thin films or bulk nanomaterials has associated several potential advantages, such as high material yield and throughput, and composition control with unmatched spatial resolution and cost. Here we report on the production of Cu3SbSe4 (CASe) NCs with tuned amounts of Sn and Bi dopants. After proper ligand removal, as monitored by nuclear magnetic resonance and infrared spectroscopy, these NCs were used to produce dense CASe bulk nanomaterials for solid state TE energy conversion. By adjusting the amount of extrinsic dopants, dimensionless TE figures of merit (ZT) up to 1.26 at 673 K were reached. Such high ZT values are related to an optimized carrier concentration by Sn doping, a minimized lattice thermal conductivity due to efficient phonon scattering at point defects and grain boundaries, and to an increase of the Seebeck coefficient obtained by a modification of the electronic band structure with Bi doping. Nanomaterials were further employed to fabricate ring-shaped TE generators to be coupled to hot pipes, which provided 20 mV and 1 mW per TE element when exposed to a 160 °C temperature gradient. The simple design and good thermal contact associated with the ring geometry and the potential low cost of the material solution processing may allow the fabrication of TE generators with short payback times.},
  author       = {Liu, Yu and García, Gregorio and Ortega, Silvia and Cadavid, Doris and Palacios, Pablo and Lu, Jinyu and Ibanez, Maria and Xi, Lili and De Roo, Jonathan and López, Antonio and Márti Sánchez, Sara and Cabezas, Ignasi and De La Mata, Maria and Luo, Zhishan and Dun, Chaocha and Dobrozhan, Oleksandr and Carroll, David and Zhang, Wenging and Martins, José and Kovalenko, Mksym and Arbiol, Jordi and Noriega, German and Song, Jiming and Wahnón, Perla and Cabot, Andreu},
  issn         = {2050-7496},
  journal      = {Journal of Materials Chemistry A},
  number       = {6},
  pages        = {2592 -- 2602},
  publisher    = {Royal Society of Chemistry},
  title        = {{Solution based synthesis and processing of Sn and Bi doped Cu inf 3 inf SbSe inf 4 inf nanocrystals nanomaterials and ring shaped thermoelectric generators}},
  doi          = {10.1039/C6TA08467B},
  volume       = {5},
  year         = {2016},
}

@article{371,
  abstract     = {The design and engineering of earth-abundant catalysts that are both cost-effective and highly active for water splitting are crucial challenges in a number of energy conversion and storage technologies. In this direction, herein we report the synthesis of Fe3O4@NiFexOy core-shell nanoheterostructures and the characterization of their electrocatalytic performance toward the oxygen evolution reaction (OER). Such nanoparticles (NPs) were produced by a two-step synthesis procedure involving the colloidal synthesis of Fe3O4 nanocubes with a defective shell and the posterior diffusion of nickel cations within this defective shell. Fe3O4@NiFexOy NPs were subsequently spin-coated over ITO-covered glass and their electrocatalytic activity toward water oxidation in carbonate electrolyte was characterized. Fe3O4@NiFexOy catalysts reached current densities above 1 mA/cm2 with a 410 mV overpotential and Tafel slopes of 48 mV/dec, which is among the best electrocatalytic performances reported in carbonate electrolyte.},
  author       = {Luo, Zhishan and Márti Sánchez, Sara and Nafria, Raquel and Joshua, Gihan and De La Mata, Maria and Guardia, Pablo and Flox, Christina and Martínez Boubeta, Carlos and Simeonidis, Konstantinos and Llorca, Jordi and Morante, Joan and Arbiol, Jordi and Ibanez Sabate, Maria and Cabot, Andreu},
  issn         = {1944-8252},
  journal      = {Applied Materials and Interfaces},
  keywords     = {nanoparticle, iron oxide, magnetite, core−shell nanostructure, electrocatalysts, oxygen evolution reaction, OER},
  number       = {43},
  pages        = {29461 -- 29469},
  publisher    = {American Chemical Society},
  title        = {{Fe3O4@NiFexOy nanoparticles with enhanced electrocatalytic properties for oxygen evolution in carbonate electrolyte}},
  doi          = {10.1021/acsami.6b09888},
  volume       = {8},
  year         = {2016},
}

@article{372,
  abstract     = {The optimization of a material functionality requires both the rational design and precise engineering of its structural and chemical parameters. In this work, we show how colloidal chemistry is an excellent synthetic choice for the synthesis of novel ternary nanostructured chalcogenides, containing exclusively noble metals, with tailored morphology and composition and with potential application in the energy conversion field. Specifically, the Ag-Au-Se system has been explored from a synthetic point of view, which leads to a set of Ag2Se-based hybrid and ternary nanoparticles including the room temperature synthesis of the rare ternary Ag3AuSe2 fischesserite phase. An in-depth structural and chemical characterization of all nanomaterials has been performed, which proofed especially useful for unravelling the reaction mechanism behind the formation of the ternary phase in solution. The work is complemented with the thermal and electric characterization of a ternary Ag-Au-Se nanocomposite with promising results: we found that the use of the ternary nanocomposite represents a clear improvement in terms of thermoelectric energy conversion as compared to a binary Ag-Se nanocomposite analogue. },
  author       = {Dalmases, Mariona and Ibanez Sabate, Maria and Torruella, Paul and Fernàndez Altable, Victor and López Conesa, Luis and Cadavid, Doris and Piveteau, Laura and Nachtegaal, Maarten and Llorca, Jordi and Ruiz González, Maria and Estradé, Sònia and Peiró, Francesca and Kovalenko, Maksym and Cabot, Andreu and Figuerola, Albert},
  issn         = {1520-5002},
  journal      = {Chemistry of Materials},
  number       = {19},
  pages        = {7017 -- 7028},
  publisher    = {American Chemical Society},
  title        = {{Synthesis and thermoelectric properties of noble metal ternary chalcogenide systems of Ag Au Se in the forms of alloyed nanoparticles and colloidal nanoheterostructures}},
  doi          = {10.1021/acs.chemmater.6b02845},
  volume       = {28},
  year         = {2016},
}

@article{379,
  abstract     = {Monodisperse Cu2ZnSnS4 (CZTS) nanocrystals (NCs), with quasi-spherical shape, were prepared by a facile, high-yield, scalable, and high-concentration heat-up procedure. The key parameters to minimize the NC size distribution were efficient mixing and heat transfer in the reaction mixture through intensive argon bubbling and improved control of the heating ramp stability. Optimized synthetic conditions allowed the production of several grams of highly monodisperse CZTS NCs per batch, with up to 5 wt % concentration in a crude solution and a yield above 90%.},
  author       = {Shavel, Alexey and Ibáñez, Maria and Luo, Zhishan and De Roo, Jonathan and Carrete, Alex and Dimitrievska, Mirjana and Genç, Aziz and Meyns, Michaela and Pérez Rodríguez, Alejandro and Kovalenko, Maksym and Arbol, Jordi and Cabot, Andreu},
  issn         = {1520-5002},
  journal      = {Chemistry of Materials},
  number       = {3},
  pages        = {720 -- 726},
  publisher    = {American Chemical Society},
  title        = {{Scalable heating-up synthesis of monodisperse Cu2ZnSnS4 nanocrystals}},
  doi          = {10.1021/acs.chemmater.5b03417},
  volume       = {28},
  year         = {2016},
}

@article{380,
  abstract     = {Size and shape tunability and low-cost solution processability make colloidal lead chalcogenide quantum dots (QDs) an emerging class of building blocks for innovative photovoltaic, thermoelectric and optoelectronic devices. Lead chalcogenide QDs are known to crystallize in the rock-salt structure, although with very different atomic order and stoichiometry in the core and surface regions; however, there exists no convincing prior identification of how extreme downsizing and surface-induced ligand effects influence structural distortion. Using forefront X-ray scattering techniques and density functional theory calculations, here we have identified that, at sizes below 8 nm, PbS and PbSe QDs undergo a lattice distortion with displacement of the Pb sublattice, driven by ligand-induced tensile strain. The resulting permanent electric dipoles may have implications on the oriented attachment of these QDs. Evidence is found for a Pb-deficient core and, in the as-synthesized QDs, for a rhombic dodecahedral shape with nonpolar {110} facets. On varying the nature of the surface ligands, differences in lattice strains are found.},
  author       = {Bertolotti, Federica and Dirin, Dmitry and Ibanez Sabate, Maria and Krumreich, Frank and Cervellino, Antonio and Frison, Ruggero and Voznyy, Oleksandr and Sargent, Edward and Kovalenko, Maksym and Guagliardi, Antonietta and Masciocchi, Norberto},
  issn         = {1476-4660},
  journal      = {Nature Materials},
  pages        = {987 -- 994},
  publisher    = {Springer nature},
  title        = {{Crystal symmetry breaking and role of vacancies in colloidal lead chalcogenide quantum dots}},
  doi          = {10.1038/NMAT4661},
  volume       = {15},
  year         = {2016},
}

@article{381,
  abstract     = {We present a high-yield and scalable colloidal synthesis to produce monodisperse AgSbSe2 nanocrystals (NCs). Using nuclear magnetic resonance (NMR) spectroscopy, we characterized the NC surface chemistry and demonstrate the presence of surfactants in dynamic exchange, which controls the NC growth mechanism. In addition, these NCs were electronically doped by introducing small amounts of bismuth. To demonstrate the technological potential of such processed material, after ligand removal by means of NaNH2, AgSbSe2 NCs were used as building blocks to produce thermoelectric (TE) nanomaterials. A preliminary optimization of the doping concentration resulted in a thermoelectric figure of merit (ZT) of 1.1 at 640 K, which is comparable to the best ZT values obtained with a Pb- and Te-free material in this middle temperature range, with the additional advantage of the high versatility and low cost associated with solution processing technologies.},
  author       = {Liu, Yu and Cadavid, Doris and Ibanez Sabate, Maria and De Roo, Jonathan and Ortega, Silvia and Dobrozhan, Oleksandr and Kovalenko, Maksym and Cabot, Andreu},
  issn         = {2050-7534},
  journal      = {Journal of Materials Chemistry C},
  number       = {21},
  pages        = {4756 -- 4762},
  publisher    = {Royal Society of Chemistry},
  title        = {{Colloidal AgSbSe2 nanocrystals: surface analysis, electronic doping and processing into thermoelectric nanomaterials}},
  doi          = {10.1039/c6tc00893c},
  volume       = {4},
  year         = {2016},
}

@article{382,
  abstract     = {Mn3O4@CoMn2O4 nanoparticles (NPs) were produced at low temperature and ambient atmosphere using a one-pot two-step synthesis protocol involving the cation exchange of Mn by Co in preformed Mn3O4 NPs. Selecting the proper cobalt precursor, the nucleation of CoxOy crystallites at the Mn3O4@CoMn2O4 surface could be simultaneously promoted to form Mn3O4@CoMn2O4–CoxOy NPs. Such heterostructured NPs were investigated for oxygen reduction and evolution reactions (ORR, OER) in alkaline solution. Mn3O4@CoMn2O4–CoxOy NPs with [Co]/[Mn] = 1 showed low overpotentials of 0.31 V at −3 mA·cm–2 and a small Tafel slope of 52 mV·dec–1 for ORR, and overpotentials of 0.31 V at 10 mA·cm–2 and a Tafel slope of 81 mV·dec–1 for OER, thus outperforming commercial Pt-, IrO2-based and previously reported transition metal oxides. This cation-exchange-based synthesis protocol opens up a new approach to design novel heterostructured NPs as efficient nonprecious metal bifunctional oxygen catalysts.},
  author       = {Luo, Zhishan and Irtem, Erdem and Ibanez, Maria and Nafria, Raquel and Márti Sánchez, Sara and Genç, Aziz and De La Mata, Maria and Liu, Yu and Cadavid, Doris and Llorca, Jordi and Arbiol, Jordi and Andreu, Teresa and Morante, Joan and Cabot, Andreu},
  issn         = {1944-8252},
  journal      = {Applied Materials and Interfaces},
  keywords     = {nanoparticle, ORR, OER, manganese oxide, cobalt oxide, colloidal, electrocatalysis, cation exchange},
  number       = {27},
  pages        = {17435 -- 17444},
  publisher    = {American Chemical Society},
  title        = {{Mn3O4@CoMn2O4–CoxOy nanoparticles: Partial cation exchange synthesis and electrocatalytic properties toward the oxygen reduction and evolution reactions}},
  doi          = {10.1021/acsami.6b02786},
  volume       = {8},
  year         = {2016},
}

@article{383,
  abstract     = {In the quest for more efficient thermoelectric material able to convert thermal to electrical energy and vice versa, composites that combine a semiconductor host having a large Seebeck coefficient with metal nanodomains that provide phonon scattering and free charge carriers are particularly appealing. Here, we present our experimental results on the thermal and electrical transport properties of PbS-metal composites produced by a versatile particle blending procedure, and where the metal work function allows injecting electrons to the intrinsic PbS host. We compare the thermoelectric performance of composites with microcrystalline or nanocrystalline structures. The electrical conductivity of the microcrystalline host can be increased several orders of magnitude with the metal inclusion, while relatively high Seebeck coefficient can be simultaneously conserved. On the other hand, in nanostructured materials, the host crystallites are not able to sustain a band bending at its interface with the metal, becoming flooded with electrons. This translates into even higher electrical conductivities than the microcrystalline material, but at the expense of lower Seebeck coefficient values.},
  author       = {Liu, Yu and Cadavid, Doris and Ibanez Sabate, Maria and Ortega, Silvia and Márti Sánchez, Sara and Dobrozhan, Oleksander and Kovalenko, Maksym and Arbiol, Jordi and Cabot, Andreu},
  issn         = {2166-532X},
  journal      = {Applied Physics Letters},
  number       = {10},
  publisher    = {American Institute of Physics},
  title        = {{Thermoelectric properties of semiconductor-metal composites produced by particle blending}},
  doi          = {10.1063/1.4961679},
  volume       = {4},
  year         = {2016},
}

@article{389,
  abstract     = {The coherent optical manipulation of solids is emerging as a promising way to engineer novel quantum states of matter. The strong time-periodic potential of intense laser light can be used to generate hybrid photon-electron states. Interaction of light with Bloch states leads to Floquet-Bloch states, which are essential in realizing new photo-induced quantum phases. Similarly, dressing of free-electron states near the surface of a solid generates Volkov states, which are used to study nonlinear optics in atoms and semiconductors. The interaction of these two dynamic states with each other remains an open experimental problem. Here we use time- and angle-resolved photoemission spectroscopy (Tr-ARPES) to selectively study the transition between these two states on the surface of the topological insulator Bi2Se3. We find that the coupling between the two strongly depends on the electron momentum, providing a route to enhance or inhibit it. Moreover, by controlling the light polarization we can negate Volkov states to generate pure Floquet-Bloch states. This work establishes a systematic path for the coherent manipulation of solids via light-matter interaction.},
  author       = {Mahmood, Fahad and Chan, Ching and Alpichshev, Zhanybek and Gardner, Dillon and Lee, Young and Lee, Patrick and Gedik, Nuh},
  issn         = {1745-2481},
  journal      = {Nature Physics},
  pages        = {306 -- 310},
  publisher    = {Springer nature},
  title        = {{Selective scattering between Floquet Bloch and Volkov states in a topological insulator}},
  doi          = {10.1038/nphys3609},
  volume       = {12},
  year         = {2016},
}

@article{390,
  abstract     = {In the underdoped copper-oxides, high-temperature superconductivity condenses from a
nonconventional metallic ”pseudogap” phase that exhibits a variety of non-Fermi liquid properties.
Recently, it has become clear that a charge density wave (CDW) phase exists within the pseudogap
regime. This CDW coexists and competes with superconductivity (SC) below the transition temperature
Tc, suggesting that these two orders are intimately related. Here we show that the condensation of
the superfluid from this unconventional precursor is reflected in deviations from the predictions of
BSC theory regarding the recombination rate of quasiparticles. We report a detailed investigation of
the quasiparticle (QP) recombination lifetime, τqp, as a function of temperature and magnetic field in
underdoped HgBa2CuO4+δ (Hg-1201) and YBa2Cu3O6+x (YBCO) single crystals by ultrafast time-resolved
reflectivity. We find that τqp(T) exhibits a local maximum in a small temperature window near Tc that is
prominent in underdoped samples with coexisting charge order and vanishes with application of a small
magnetic field. We explain this unusual, non-BCS behavior by positing that Tc marks a transition from
phase-fluctuating SC/CDW composite order above to a SC/CDW condensate below. Our results suggest
that the superfluid in underdoped cuprates is a condensate of coherently-mixed particle-particle and
particle-hole pairs.},
  author       = {Hinton, James and Thewalt, E and Alpichshev, Zhanybek and Mahmood, Fahad and Koralek, Jake and Chan, Mun and Veit, Michael and Dorow, Chelsey and Barišić, Neven and Kemper, Alexander and Bonn, Doug and Hardy, Walter and Liang, Ruixing and Gedik, Nuh and Greven, Martin and Lanzara, Alessandra and Orenstein, Joseph},
  issn         = {2045-2322},
  journal      = {Scientific Reports},
  publisher    = {Nature Publishing Group},
  title        = {{The rate of quasiparticle recombination probes the onset of coherence in cuprate superconductors}},
  doi          = {10.1038/srep23610},
  volume       = {6},
  year         = {2016},
}

@article{173,
  abstract     = {We calculate admissible values of r such that a square-free polynomial with integer coefficients, no fixed prime divisor and irreducible factors of degree at most 3 takes infinitely many values that are a product of at most r distinct primes.},
  author       = {Browning, Timothy D and Booker, Andrew},
  journal      = {Discrete Analysis},
  pages        = {1 -- 18},
  title        = {{Square-free values of reducible polynomials}},
  doi          = {10.19086/da.732},
  volume       = {8},
  year         = {2016},
}

@article{17618,
  abstract     = {The largest observed supermassive black holes (SMBHs) have a mass of M_BH ~ 10^{10} M_sun, nearly independent of redshift, from the local (z~0) to the early (z>6) Universe. We suggest that the growth of SMBHs above a few 10^{10} M_sun is prevented by small-scale accretion physics, independent of the properties of their host galaxies or of cosmology. Growing more massive BHs requires a gas supply rate from galactic scales onto a nuclear region as high as >10^3 M_sun/yr. At such a high accretion rate, most of the gas converts to stars at large radii (~10-100 pc), well before reaching the BH. We adopt a simple model (Thompson et al. 2005) for a star-forming accretion disk, and find that the accretion rate in the sub-pc nuclear region is reduced to the smaller value of at most a few M_sun/yr. This prevents SMBHs from growing above ~10^{11} M_sun in the age of the Universe. Furthermore, once a SMBH reaches a sufficiently high mass, this rate falls below the critical value at which the accretion flow becomes advection dominated. Once this transition occurs, BH feeding can be suppressed by strong outflows and jets from hot gas near the BH. We find that the maximum SMBH mass, given by this transition, is between M_{BH,max} ~ (1-6) * 10^{10} M_sun, depending primarily on the efficiency of angular momentum transfer inside the galactic disk, and not on other properties of the host galaxy.},
  author       = {Inayoshi, Kohei and Haiman, Zoltán},
  issn         = {0004-637X},
  journal      = {The Astrophysical Journal},
  number       = {2},
  publisher    = {American Astronomical Society},
  title        = {{Is there a maximum mass for black holes in galactic nuclei?}},
  doi          = {10.3847/0004-637x/828/2/110},
  volume       = {828},
  year         = {2016},
}

@article{17621,
  abstract     = {We introduce an intrinsic Lyα emission-line profile reconstruction method for high-z quasars (QSOs). This approach utilises a covariance matrix of emission-line properties obtained from a large, moderate-z (2 ≤ z ≤ 2.5), high signal to noise (S/N > 15) sample of BOSS QSOs. For each QSO, we complete a Monte Carlo Markov Chain fitting of the continuum and emission-line properties and perform a visual quality assessment to construct a large data base of robustly fit spectra. With this data set, we construct a covariance matrix to describe the correlations between the high-ionization emission lines Lyα, C iv, Si iv +O iv] and C iii], and find it to be well approximated by an N-dimensional Gaussian distribution. This covariance matrix characterizes the correlations between the linewidth, peak height and velocity offset from systemic while also allowing for the existence of broad- and narrow-line components for Lyα and C iv. We illustrate how this covariance matrix allows us to statistically characterize the intrinsic Lyα line solely from the observed spectrum redward of 1275 Å. This procedure can be used to reconstruct the intrinsic Lyα line emission profile in cases where Lyα may otherwise be obscured. Applying this reconstruction method to our sample of QSOs, we recovered the Lyα line flux to within 15 per cent of the measured flux at 1205 Å (1220 Å) ∼85 (90) per cent of the time.},
  author       = {Greig, Bradley and Mesinger, Andrei and McGreer, Ian D. and Gallerani, Simona and Haiman, Zoltán},
  issn         = {0035-8711},
  journal      = {Monthly Notices of the Royal Astronomical Society},
  number       = {2},
  pages        = {1814--1838},
  publisher    = {Oxford University Press},
  title        = {{Lyα emission-line reconstruction for high-z QSOs}},
  doi          = {10.1093/mnras/stw3210},
  volume       = {466},
  year         = {2016},
}

@article{17626,
  abstract     = {Weak gravitational lensing is becoming a mature technique for constraining cosmological parameters, and future surveys will be able to constrain the dark energy equation of state 𝑤. When analyzing galaxy surveys, redshift information has proven to be a valuable addition to angular shear correlations. We forecast parameter constraints on the triplet (Ω𝑚,𝑤,𝜎8) for a LSST-like photometric galaxy survey, using tomography of the shear-shear power spectrum, convergence peak counts and higher convergence moments. We find that redshift tomography with the power spectrum reduces the area of the 1⁢𝜎 confidence interval in (Ω𝑚,𝑤) space by a factor of 8 with respect to the case of the single highest redshift bin. We also find that adding non-Gaussian information from the peak counts and higher-order moments of the convergence field and its spatial derivatives further reduces the constrained area in (Ω𝑚,𝑤) by factors of 3 and 4, respectively. When we add cosmic microwave background parameter priors from Planck to our analysis, tomography improves power spectrum constraints by a factor of 3. Adding moments yields an improvement by an additional factor of 2, and adding both moments and peaks improves by almost a factor of 3 over power spectrum tomography alone. We evaluate the effect of uncorrected systematic photometric redshift errors on the parameter constraints. We find that different statistics lead to different bias directions in parameter space, suggesting the possibility of eliminating this bias via self-calibration.},
  author       = {Petri, Andrea and May, Morgan and Haiman, Zoltán},
  issn         = {2470-0010},
  journal      = {Physical Review D},
  number       = {6},
  publisher    = {American Physical Society},
  title        = {{Cosmology with photometric weak lensing surveys: Constraints with redshift tomography of convergence peaks and moments}},
  doi          = {10.1103/physrevd.94.063534},
  volume       = {94},
  year         = {2016},
}

@article{17628,
  abstract     = {Constraining cosmology using weak gravitational lensing consists of comparing a measured feature vector of dimension 𝑁𝑏 with its simulated counterpart. An accurate estimate of the 𝑁𝑏×𝑁𝑏 feature covariance matrix 𝐂 is essential to obtain accurate parameter confidence intervals. When 𝐂 is measured from a set of simulations, an important question is how large this set should be. To answer this question, we construct different ensembles of 𝑁𝑟 realizations of the shear field, using a common randomization procedure that recycles the outputs from a smaller number 𝑁𝑠≤𝑁𝑟 of independent ray-tracing 𝑁-body simulations. We study parameter confidence intervals as a function of (𝑁𝑠, 𝑁𝑟) in the range 1≤𝑁𝑠≤200 and 1≤𝑁𝑟≲105. Previous work [S. Dodelson and M. D. Schneider, Phys. Rev. D 88, 063537 (2013)] has shown that Gaussian noise in the feature vectors (from which the covariance is estimated) lead, at quadratic order, to an 𝑂⁢(1/𝑁𝑟) degradation of the parameter confidence intervals. Using a variety of lensing features measured in our simulations, including shear-shear power spectra and peak counts, we show that cubic and quartic covariance fluctuations lead to additional 𝑂⁢(1/𝑁2𝑟) error degradation that is not negligible when 𝑁𝑟 is only a factor of few larger than 𝑁𝑏. We study the large 𝑁𝑟 limit, and find that a single, 240  Mpc/ℎ sized 5123-particle 𝑁-body simulation (𝑁𝑠=1) can be repeatedly recycled to produce as many as 𝑁𝑟=few×104 shear maps whose power spectra and high-significance peak counts can be treated as statistically independent. As a result, a small number of simulations (𝑁𝑠=1 or 2) is sufficient to forecast parameter confidence intervals at percent accuracy.},
  author       = {Petri, Andrea and Haiman, Zoltán and May, Morgan},
  issn         = {2470-0010},
  journal      = {Physical Review D},
  number       = {6},
  publisher    = {American Physical Society},
  title        = {{Sample variance in weak lensing: How many simulations are required?}},
  doi          = {10.1103/physrevd.93.063524},
  volume       = {93},
  year         = {2016},
}

@article{17649,
  abstract     = {Weak lensing convergence peaks are a promising tool to probe nonlinear structure evolution at late times, providing additional cosmological information beyond second-order statistics. Previous theoretical and observational studies have shown that the cosmological constraints on Ωm and σ8 are improved by a factor of up to ~ 2 when peak counts and second-order statistics are combined, compared to using the latter alone. We study the origin of lensing peaks using observational data from the 154 deg2 Canada-France-Hawaii Telescope Lensing Survey. We found that while high peaks (with height κ >3.5 σκ, where σκ is the r.m.s. of the convergence κ) are typically due to one single massive halo of ~1015M⊙, low peaks (κ <~ σκ) are associated with constellations of 2-8 smaller halos (<~1013M⊙). In addition, halos responsible for forming low peaks are found to be significantly offset from the line-of-sight towards the peak center (impact parameter >~ their virial radii), compared with ~0.25 virial radii for halos linked with high peaks, hinting that low peaks are more immune to baryonic processes whose impact is confined to the inner regions of the dark matter halos. Our findings are in good agreement with results from the simulation work by Yang el al. (2011).},
  author       = {Liu, Jia and Haiman, Zoltán},
  issn         = {2470-0010},
  journal      = {Physical Review D},
  number       = {4},
  publisher    = {American Physical Society},
  title        = {{Origin of weak lensing convergence peaks}},
  doi          = {10.1103/physrevd.94.043533},
  volume       = {94},
  year         = {2016},
}

@article{17654,
  abstract     = {We explore the formation of massive high-redshift Population III (Pop III) galaxies through photoionization feedback. We consider dark matter haloes formed from progenitors that have undergone no star formation as a result of early reionization and photoevaporation caused by a nearby galaxy. Once such a halo reaches ≈109 M⊙, corresponding to the Jeans mass of the photoheated intergalactic medium at z ≈ 7, pristine gas is able to collapse into the halo, potentially producing a massive Pop III starburst. We suggest that this scenario may explain the recent observation of strong He ii 1640 Å line emission in CR 7, which is consistent with ∼107 M⊙ of young Pop III stars. Such a large mass of Pop III stars is unlikely without the photoionization feedback scenario, because star formation is expected to inject metals into haloes above the atomic cooling threshold (∼108 M⊙ at z ≈ 7). We use merger trees to analytically estimate the abundance of observable Pop III galaxies formed through this channel, and find a number density of ≈10−7 Mpc−3 at z = 6.6 (the redshift of CR 7). This is approximately a factor of 10 lower than the density of Ly α emitters as bright as CR 7.},
  author       = {Visbal, Eli and Haiman, Zoltán and Bryan, Greg L.},
  issn         = {1745-3925},
  journal      = {Monthly Notices of the Royal Astronomical Society: Letters},
  number       = {1},
  pages        = {L59--L63},
  publisher    = {Oxford University Press},
  title        = {{Formation of massive Population III galaxies through photoionization feedback: A possible explanation for CR 7}},
  doi          = {10.1093/mnrasl/slw071},
  volume       = {460},
  year         = {2016},
}

@article{17656,
  abstract     = {We explore the evolution of stellar mass black hole binaries (BHBs) which are formed in the self-gravitating discs of active galactic nuclei (AGN). Hardening due to three-body scattering and gaseous drag are effective mechanisms that reduce the semimajor axis of a BHB to radii where gravitational waves take over, on time-scales shorter than the typical lifetime of the AGN disc. Taking observationally motivated assumptions for the rate of star formation in AGN discs, we find a rate of disc-induced BHB mergers (⁠| $\mathcal {R} \sim 3\ {\rm yr}^{-1}\ {\rm Gpc}^{-3}$ |⁠, but with large uncertainties) that is comparable with existing estimates of the field rate of BHB mergers, and the approximate BHB merger rate implied by the recent Advanced LIGO detection of GW150914. BHBs formed thorough this channel will frequently be associated with luminous AGN, which are relatively rare within the sky error regions of future gravitational wave detector arrays. This channel could also possess a (potentially transient) electromagnetic counterpart due to super-Eddington accretion on to the stellar mass black hole following the merger.},
  author       = {Stone, Nicholas C. and Metzger, Brian D. and Haiman, Zoltán},
  issn         = {0035-8711},
  journal      = {Monthly Notices of the Royal Astronomical Society},
  number       = {1},
  pages        = {946--954},
  publisher    = {Oxford University Press},
  title        = {{Assisted inspirals of stellar mass black holes embedded in AGN discs: Solving the ‘final au problem’}},
  doi          = {10.1093/mnras/stw2260},
  volume       = {464},
  year         = {2016},
}

@article{17658,
  abstract     = {We study circumbinary accretion discs in the framework of the restricted three-body problem (R3Bp) and via numerically solving the height-integrated equations of viscous hydrodynamics. Varying the mass ratio of the binary, we find a pronounced change in the behaviour of the disc near mass ratio q ≡ Ms/Mp ∼ 0.04. For mass ratios above q = 0.04, solutions for the hydrodynamic flow transition from steady, to strongly fluctuating; a narrow annular gap in the surface density around the secondary's orbit changes to a hollow central cavity; and a spatial symmetry is lost, resulting in a lopsided disc. This phase transition is coincident with the mass ratio above which stable orbits do not exist around the L4 and L5 equilibrium points of the R3Bp. Using the disco code, we find that for thin discs, for which a gap or cavity can remain open, the mass ratio of the transition is relatively insensitive to disc viscosity and pressure. The q = 0.04 transition has relevance for the evolution of massive black hole binary+disc systems at the centres of galactic nuclei, as well as for young stellar binaries and possibly planets around brown dwarfs.},
  author       = {D'Orazio, Daniel J. and Haiman, Zoltán and Duffell, Paul and MacFadyen, Andrew and Farris, Brian},
  issn         = {0035-8711},
  journal      = {Monthly Notices of the Royal Astronomical Society},
  number       = {3},
  pages        = {2379--2393},
  publisher    = {Oxford University Press},
  title        = {{A transition in circumbinary accretion discs at a binary mass ratio of 1:25}},
  doi          = {10.1093/mnras/stw792},
  volume       = {459},
  year         = {2016},
}

@article{17659,
  abstract     = {The recent discovery of the gravitational wave source GW150914 has revealed a coalescing binary black hole (BBH) with masses of ∼30 M⊙. Previous proposals for the origin of such a massive binary include Population III (PopIII) stars. PopIII stars are efficient producers of BBHs and of a gravitational wave background (GWB) in the 10–100 Hz band, and also of ionizing radiation in the early Universe. We quantify the relation between the amplitude of the GWB (Ωgw) and the electron scattering optical depth (τe), produced by PopIII stars, assuming that fesc ≈ 10 per cent of their ionizing radiation escapes into the intergalactic medium. We find that PopIII stars would produce a GWB that is detectable by the future O5 LIGO/Virgo if τe ≳ 0.07, consistent with the recent Planck measurement of τe = 0.055 ± 0.09. Moreover, the spectral index of the background from PopIII BBHs becomes as small as dln Ωgw/dln f ≲ 0.3 at f ≳ 30 Hz, which is significantly flatter than the value ∼2/3 generically produced by lower redshift and less-massive BBHs. A detection of the unique flattening at such low frequencies by the O5 LIGO/Virgo will indicate the existence of a high-chirp mass, high-redshift BBH population, which is consistent with the PopIII origin. A precise characterization of the spectral shape near 30–50 Hz by the Einstein Telescope could also constrain the PopIII initial mass function and star formation rate.},
  author       = {Inayoshi, Kohei and Kashiyama, Kazumi and Visbal, Eli and Haiman, Zoltán},
  issn         = {0035-8711},
  journal      = {Monthly Notices of the Royal Astronomical Society},
  number       = {3},
  pages        = {2722--2727},
  publisher    = {Oxford University Press},
  title        = {{Gravitational wave background from Population III binary black holes consistent with cosmic reionization}},
  doi          = {10.1093/mnras/stw1431},
  volume       = {461},
  year         = {2016},
}