TheHaloMod: An online calculator for the halo model
TLDR
The basic formulation of the halo model and several of its components are reviewed in the context of galaxy two-point statistics, developing a coherent framework for its application.Abstract:
The halo model is a successful framework for describing the distribution of matter in the Universe -- from weak lensing observables to galaxy 2-point correlation functions. We review the basic formulation of the halo model and several of its components in the context of galaxy two-point statistics, developing a coherent framework for its application.
We use this framework to motivate the presentation of a new Python tool for simple and efficient calculation of halo model quantities, and their extension to galaxy statistics via a \textit{halo occupation distribution}, called \halomod. This tool is efficient, simple to use, comprehensive and importantly provides a great deal of flexibility in terms of custom extensions. This Python tool is complemented by a new web-application at https://thehalomod.app that supports the generation of many halo model quantities directly from the browser -- useful for educators, students, theorists and observers.read more
Citations
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The Scale-Dependence of Halo Assembly Bias
TL;DR: In this article, the scale-dependent assembly bias of the two-point clustering of dark matter halos is studied and shown to be influenced by halo properties besides mass, a phenomenon referred to as halo assembly bias.
Journal Article
Galaxy-Galaxy Lensing in Dark Energy Survey Science Verification Data
TL;DR: In this article, the authors present galaxy-galaxy lensing results from 139 deg(2) of the DES Science Verification (SV) data, which are specifically selected to have a low photometric redshift error and outlier rate.
Journal ArticleDOI
Responses of Halo Occupation Distributions: a new ingredient in the halo model & the impact on galaxy bias
TL;DR: In this paper, the authors investigate the impact of long-wavelength perturbations on the response of the HODs to longwavelength observations and find that the effect of these perturbation on the bias of the gas distribution is not negligible in general.
Posted Content
An Intensity Mapping Constraint on the CO-Galaxy Cross Power Spectrum at Redshift ~ 3
TL;DR: In this article, a 2-sigma upper bound on the band-averaged CO-galaxy cross-power of the CO brightness power spectrum has been established, and the expected cross-spectrum spectrum is forecast by applying a number of literature prescriptions for the CO luminosity to halo mass relation.
Proceedings Article
The Luminosity and Color Dependence of the Galaxy Correlation Function
TL;DR: The HOD model fits nicely explain the color dependence of wp(rp) and the cross correlation between red and blue galaxies, and a conditional luminosity function (at fixed halo mass) in which central galaxies lie far above a Schechter function extrapolation of the satellite population.
References
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Journal ArticleDOI
Revising the Halofit Model for the Nonlinear Matter Power Spectrum
Ryuichi Takahashi,Masanori Sato,Takahiro Nishimichi,Atsushi Taruya,Atsushi Taruya,Masamune Oguri +5 more
TL;DR: In this paper, a suite of state-of-the-art high-resolution N-body simulations is used to predict the nonlinear matter power spectrum in a universe dominated by cold dark matter.
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Triaxial modeling of halo density profiles with high-resolution N-body simulations
Yipeng Jing,Yasushi Suto +1 more
TL;DR: In this article, the authors presented a detailed nonspherical modeling of dark matter halos on the basis of a combined analysis of high-resolution halo simulations and large cosmological simulations (five realizations with N = 5123 particles in a 100 h-1 Mpc box size).
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Dark matter halo concentrations in the Wilkinson Microwave Anisotropy Probe year 5 cosmology
TL;DR: In this paper, a combination of three large N-body simulations was used to investigate the dependence of dark matter halo concentrations on halo mass and redshift in the Wilkinson Microwave Anisotropy Probe year 5 (WMAP5) cosmology.
Journal ArticleDOI
The Luminosity and Color Dependence of the Galaxy Correlation Function
Idit Zehavi,Zheng Zheng,David H. Weinberg,Joshua A. Frieman,Joshua A. Frieman,Andreas A. Berlind,Michael R. Blanton,Roman Scoccimarro,Ravi K. Sheth,Michael A. Strauss,Issha Kayo,Issha Kayo,Yasushi Suto,Masataka Fukugita,Osamu Nakamura,Neta A. Bahcall,Jon Brinkmann,James E. Gunn,Greg Hennessy,Željko Ivezić,Gillian R. Knapp,Jon Loveday,Avery Meiksin,David J. Schlegel,Donald P. Schneider,István Szapudi,Max Tegmark,Michael S. Vogeley,Donald G. York +28 more
TL;DR: In this article, the authors measured the projected correlation function wp(rp), which is directly related to the real-space correlation function, and interpreted these results using halo occupation distribution (HOD) models assuming concordance cosmological parameters.
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MultiDark simulations: the story of dark matter halo concentrations and density profiles
TL;DR: In this paper, the authors used the suite of MultiDark cosmological simulations to study the evolution of dark matter halo density profiles, concentrations, and velocity anisotropies.