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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