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Cited by 817

The DOI matches its Crossref record; 643 of the 643 references it cites were found in a registry or an index.

Large-scale galaxy bias

Open access
Desjacques, Vincent, Jeong, Donghui, Schmidt, Fabian·2018·Physics Reports
DOI 10.1016/j.physrep.2017.12.002
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Abstract

This review presents a comprehensive overview of galaxy bias, that is, the statistical relation between the distribution of galaxies and matter. We focus on large scales where cosmic density fields are quasi-linear. On these scales, the clustering of galaxies can be described by a perturbative bias expansion, and the complicated physics of galaxy formation is absorbed by a finite set of coefficients of the expansion, called bias parameters . The review begins with a detailed derivation of this very important result, which forms the basis of the rigorous perturbative description of galaxy clustering, under the assumptions of General Relativity and Gaussian, adiabatic initial conditions. Key components of the bias expansion are all leading local gravitational observables, which include the matter density but also tidal fields and their time derivatives. We hence expand the definition of local bias to encompass all these contributions. This derivation is followed by a presentation of the peak-background split in its general form, which elucidates the physical meaning of the bias parameters, and a detailed description of the connection between bias parameters and galaxy statistics. We then review the excursion-set formalism and peak theory which provide predictions for the values of the bias parameters. In the remainder of the review, we consider the generalizations of galaxy bias required in the presence of various types of cosmological physics that go beyond pressureless matter with adiabatic, Gaussian initial conditions: primordial non-Gaussianity, massive neutrinos, baryon–CDM isocurvature perturbations, dark energy, and modified gravity. Finally, we discuss how the description of galaxy bias in the galaxies’ rest frame is related to clustering statistics measured from the observed angular positions and redshifts in actual galaxy catalogs.

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Citations

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Metadata

Authors
Desjacques, V., Jeong, D., & Schmidt, F.
Venue
Physics Reports
Publisher
Elsevier BV
Published
2018-02
Volume
733
Pages
1-193
ISSN
0370-1573 (ISSN-L)
DOI
10.1016/j.physrep.2017.12.002
OpenAlex
W2557413462
Cited by
817
References
643
FWCI
45.22
Type
journal article
Language
en
Open access
hybrid

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