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Effective dark matter halo catalog in f(R) gravity

He, J.; Hawken, A.J.; Li, B.; Guzzo, L.

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Authors

J. He

A.J. Hawken

L. Guzzo



Abstract

We introduce the idea of an effective dark matter halo catalog in f(R) gravity, which is built using the effective density field. Using a suite of high resolution N-body simulations, we find that the dynamical properties of halos, such as the distribution of density, velocity dispersion, specific angular momentum and spin, in the effective catalog of f(R) gravity closely mimic those in the cold dark matter model with a cosmological constant (ΛCDM). Thus, when using effective halos, an f(R) model can be viewed as a ΛCDM model. This effective catalog therefore provides a convenient way for studying the baryonic physics, the galaxy halo occupation distribution and even semianalytical galaxy formation in f(R) cosmologies.

Journal Article Type Article
Acceptance Date Jul 28, 2015
Publication Date Aug 14, 2015
Deposit Date Aug 17, 2015
Publicly Available Date Sep 4, 2015
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 115
Issue 7
DOI https://doi.org/10.1103/physrevlett.115.071306
Public URL https://durham-repository.worktribe.com/output/1401278
Related Public URLs http://arxiv.org/abs/1501.00846

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Copyright Statement
Reprinted with permission from the American Physical Society: Physical Review Letters 115, 071306 © 2015 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.






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