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
Galaxy Clustering in the Completed SDSS Redshift Survey: The Dependence on Color and Luminosity
Idit Zehavi,Zheng Zheng,David H. Weinberg,Michael R. Blanton,Neta A. Bahcall,Andreas A. Berlind,Jon Brinkmann,Joshua A. Frieman,Joshua A. Frieman,James E. Gunn,Robert H. Lupton,Robert C. Nichol,Will J. Percival,Donald P. Schneider,Ramin A. Skibba,Michael A. Strauss,Max Tegmark,Donald G. York +17 more
TL;DR: In this article, the authors measured the luminosity and color dependence of galaxy clustering in the largest-ever galaxy redshift survey, the main galaxy sample of the Sloan Digital Sky Survey (SDSS) Seventh Data Release (DR7).
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The large-scale bias of dark matter halos: numerical calibration and model tests
Jeremy L. Tinker,Brant Robertson,Andrey V. Kravtsov,Anatoly Klypin,Michael S. Warren,Gustavo Yepes,Stefan Gottlöber +6 more
TL;DR: In this article, the authors measure the clustering of dark matter halos in a large set of collisionless cosmological simulations of the flatCDM cosmology, and find that the bias of rare halos is higher than that predicted in the modified ellipsoidal collapse model of Sheth, Mo, & Tormen (2001), and approaches the predictions of the spherical collapse model for the rarest halos.
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Theoretical Models of the Halo Occupation Distribution: Separating Central and Satellite Galaxies
Zheng Zheng,Zheng Zheng,Andreas A. Berlind,David H. Weinberg,Andrew J. Benson,Carlton M. Baugh,Shaun Cole,Romeel Davé,Carlos S. Frenk,Neal Katz,Cedric G. Lacey +10 more
TL;DR: In this paper, the authors examined the contribution of central and satellite galaxies to the HOD, more specifically to the probability P(N|M) that a halo of virial mass M contains N galaxies of a particular class.
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Cold dark matter haloes in the Planck era: evolution of structural parameters for Einasto and NFW profiles
Aaron A. Dutton,Andrea V. Macciò +1 more
TL;DR: In this paper, the authors present the evolution of the structure of relaxed cold dark matter haloes in the cosmology from the Planck satellite and provide a simple fitting formula that accurately describes the evolution between redshifts z=5 to z=0 for both NFW and Einasto fits.
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Concentration, spin and shape of dark matter haloes as a function of the cosmological model: WMAP1, WMAP3 and WMAP5 results
TL;DR: In this paper, the effects of changes in the cosmological parameters between the Wilkinson Microwave Anisotropy Probe (WMAP) 1st, 3rd and 5th year results on the structure of dark matter haloes were investigated.