Skip to main content

Research Repository

Advanced Search

Real- and redshift-space halo clustering in f(R) cosmologies

Arnalte-Mur, P.; Hellwing, W.A.; Norberg, P.

Real- and redshift-space halo clustering in f(R) cosmologies Thumbnail


P. Arnalte-Mur

W.A. Hellwing


We present two-point correlation function statistics of the mass and the haloes in the chameleon f(R) modified gravity scenario using a series of large-volume N-body simulations. Three distinct variations of f(R) are considered (F4, F5 and F6) and compared to a fiducial Λ cold dark matter (ΛCDM) model in the redshift range z ∈ [0, 1]. We find that the matter clustering is indistinguishable for all models except for F4, which shows a significantly steeper slope. The ratio of the redshift- to real-space correlation function at scales >20 h−1 Mpc agrees with the linear General Relativity (GR) Kaiser formula for the viable f(R) models considered. We consider three halo populations characterized by spatial abundances comparable to that of luminous red galaxies and galaxy clusters. The redshift-space halo correlation functions of F4 and F5 deviate significantly from ΛCDM at intermediate and high redshift, as the f(R) halo bias is smaller than or equal to that of the ΛCDM case. Finally, we introduce a new model-independent clustering statistic to distinguish f(R) from GR: the relative halo clustering ratio – R R. The sampling required to adequately reduce the scatter in R R will be available with the advent of the next-generation galaxy redshift surveys. This will foster a prospective avenue to obtain largely model-independent cosmological constraints on this class of modified gravity models.


Arnalte-Mur, P., Hellwing, W., & Norberg, P. (2017). Real- and redshift-space halo clustering in f(R) cosmologies. Monthly Notices of the Royal Astronomical Society, 467(2), 1569-1585.

Journal Article Type Article
Acceptance Date Jan 19, 2017
Online Publication Date Jan 22, 2017
Publication Date May 21, 2017
Deposit Date Mar 13, 2017
Publicly Available Date Mar 17, 2017
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 467
Issue 2
Pages 1569-1585


Published Journal Article (3.6 Mb)

Copyright Statement
This article has been published in Monthly Notices of the Royal Astronomical Society ©: 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

You might also like

Downloadable Citations