Cluster constraints on f(R) gravity

Fabian Schmidt, Alexey Vikhlinin, and Wayne Hu
Phys. Rev. D 80, 083505 – Published 6 October 2009

Abstract

Modified gravitational forces in models that seek to explain cosmic acceleration without dark energy typically predict deviations in the abundance of massive dark matter halos. We conduct the first, simulation calibrated, cluster abundance constraints on a modified gravity model, specifically the modified action f(R) model. The local cluster abundance, when combined with geometric and high redshift data from the cosmic microwave background, supernovae, H0, and baryon acoustic oscillations, improves previous constraints by nearly 4 orders of magnitude in the field amplitude. These limits correspond to a 2 order of magnitude improvement in the bounds on the range of the force modification from the several Gpc scale to the tens of Mpc scale.

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  • Received 17 August 2009

DOI:https://doi.org/10.1103/PhysRevD.80.083505

©2009 American Physical Society

Authors & Affiliations

Fabian Schmidt1, Alexey Vikhlinin2, and Wayne Hu1

  • 1Kavli Institute for Cosmological Physics, Department of Astronomy & Astrophysics, and Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
  • 2Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA, and Space Research Institute, Moscow, Russia

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Issue

Vol. 80, Iss. 8 — 15 October 2009

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