3.7k citations · 12.1k across the 35 of their papers we have counts for
21 papers · 1 filter
Higher Order Hamiltonian Monte Carlo Sampling for Cosmological Large-Scale Structure Analysis
Mónica Hernández-Sánchez, Francisco-Shu Kitaura, Metin Ata +1
We investigate higher order symplectic integration strategies within Bayesian cosmic density field reconstruction methods. In particular, we study the fourth-order discretisation o…
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Cosmological implications of the Fourier space wedges of the final sample
Jan Niklas Grieb, Ariel G. Sánchez, Salvador Salazar-Albornoz +25
We extract cosmological information from the anisotropic power spectrum measurements from the recently completed Baryon Oscillation Spectroscopic Survey (BOSS), extending the conce…
nIFTy galaxy cluster simulations I: dark matter & non-radiative models
Federico Sembolini, Gustavo Yepes, Frazer R. Pearce +24
We have simulated the formation of a galaxy cluster in a CDM universe using twelve different codes modeling only gravity and non-radiative hydrodynamics (\art, \arepo, \hydra\ a…
The First Billion Years Project: The escape fraction of ionizing photons in the epoch of reionization
Jan-Pieter Paardekooper, Sadegh Khochfar, Claudio Dalla Vecchia
Proto-galaxies forming in low-mass dark matter haloes are thought to provide the majority of ionizing photons needed to reionize the Universe, due to their high escape fractions of…
Baryon effects on the internal structure of LCDM halos in the EAGLE simulations
Matthieu Schaller, Carlos S. Frenk, Richard G. Bower +7
We investigate the internal structure and density profiles of halos of mass in the Evolution and Assembly of Galaxies and their Environment (EAGLE) simula…
The effect of baryons on the inner density profiles of rich clusters
Matthieu Schaller, Carlos S. Frenk, Richard G. Bower +7
We use the "Evolution and assembly of galaxies and their environments" (EAGLE) cosmological simulation to investigate the effect of baryons on the density profiles of rich galaxy c…
The First Billion Years project: birthplaces of direct collapse black holes
Bhaskar Agarwal, Claudio Dalla Vecchia, Jarrett L. Johnson +2
We investigate the environment in which direct-collapse black holes may form by analysing a cosmological, hydrodynamical simulation that is part of the First Billion Years project.…
The First Billion Years project: dark matter haloes going from contraction to expansion and back again
Andrew J. Davis, Sadegh Khochfar, Claudio Dalla Vecchia
We study the effect of baryons on the inner dark matter profile of the first galaxies using the First Billion Years simulation between z=16-6 before secular evolution sets in. Usin…
The Impact of Different Physical Processes on the Statistics of Lyman-limit and Damped Lyman-alpha Absorbers
Gabriel Altay, Tom Theuns, Joop Schaye +2
We compute the z = 3 neutral hydrogen column density distribution function f(NHI) for 19 simulations drawn from the OWLS project using a post-processing correction for self-shieldi…
Physical properties of simulated galaxy populations at z=2 - II. Effects of cosmology, reionization and ISM physics
Marcel R. Haas, Joop Schaye, C. M. Booth +4
We use hydrodynamical simulations from the OWLS project to investigate the dependence of the physical properties of galaxy populations at redshift 2 on the assumed star formation l…
Physical properties of simulated galaxy populations at z=2 - I. Effect of metal-line cooling and feedback from star formation and AGN
Marcel R. Haas, Joop Schaye, C. M. Booth +4
We use hydrodynamical simulations from the OWLS project to investigate the dependence of the physical properties of galaxy populations at redshift 2 on metal-line cooling and feedb…
Ubiquitous seeding of supermassive black holes by direct collapse
Bhaskar Agarwal, Sadegh Khochfar, Jarrett L. Johnson +3
We study for the first time the environment of massive black hole (BH) seeds (~10^4-5 Msun) formed via the direct collapse of pristine gas clouds in massive haloes (>10^7 Msun) at…
The Origin of Disks and Spheroids in Simulated Galaxies
Laura V. Sales, Julio F. Navarro, Tom Theuns +5
In the simplest scenario, disk galaxies form predominantly in halos with high angular momentum and quiet recent assembly history, whereas spheroids are the slowly-rotating remnants…
Hydrodynamical simulations and semi-analytic models of galaxy formation: two sides of the same coin
Eyal Neistein, Sadegh Khochfar, Claudio Dalla Vecchia +1
In this work we develop a new method to turn a state-of-the-art hydrodynamical cosmological simulation of galaxy formation (HYD) into a simple semi-analytic model (SAM). This is ac…
Modelling neutral hydrogen in galaxies using cosmological hydrodynamical simulations
Alan R. Duffy, Scott T. Kay, Richard A. Battye +3
The characterisation of the atomic and molecular hydrogen content of high-redshift galaxies is a major observational challenge that will be addressed over the coming years with a n…
The effects of galaxy formation on the matter power spectrum: A challenge for precision cosmology
Marcel P. van Daalen, Joop Schaye, C. M. Booth +1
Upcoming weak lensing surveys, such as LSST, EUCLID, and WFIRST, aim to measure the matter power spectrum with unprecedented accuracy. In order to fully exploit these observations,…
The drop in the cosmic star formation rate below redshift 2 is caused by a change in the mode of gas accretion and by AGN feedback
Freeke van de Voort, Joop Schaye, C. M. Booth +1
The cosmic star formation rate is observed to drop sharply after redshift z=2. We use a large, cosmological, smoothed particle hydrodynamics simulation to investigate how this decl…
The filling factor of intergalactic metals at redshift z=3
C. M. Booth, Joop Schaye, J. D. Delgado +1
Observations of quasar absorption line systems reveal that the z=3 intergalactic medium (IGM) is polluted by heavy elements down to HI optical depths tau_HI<<10. What is not yet cl…
The rates and modes of gas accretion on to galaxies and their gaseous haloes
Freeke van de Voort, Joop Schaye, C. M. Booth +2
(Abridged) We study the rate at which gas accretes onto galaxies and haloes and investigate whether the accreted gas was shocked to high temperatures before reaching a galaxy. For…
The enrichment history of cosmic metals
Robert P. C. Wiersma, Joop Schaye, Claudio Dalla Vecchia +3
We use a suite of cosmological, hydrodynamical simulations to investigate the chemical enrichment history of the Universe. Specifically, we trace the origin of the metals back in t…
Galaxies-Intergalactic Medium Interaction Calculation --I. Galaxy formation as a function of large-scale environment
Robert A. Crain, Tom Theuns, Claudio Dalla Vecchia +11
[Abridged] We present the first results of hydrodynamical simulations that follow the formation of galaxies to z=0 in spherical regions of radius ~20 Mpc/h drawn from the Millenniu…