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Testing gravity using the environmental dependence of dark matter halos

Zhao, G.; Li, B.; Koyama, K.

Authors

G. Zhao

K. Koyama



Abstract

In this Letter, we investigate the environmental dependence of dark matter halos in theories which attempt to explain the accelerated expansion of the Universe by modifying general relativity (GR). Using high-resolution N-body simulations in f(R) gravity models which recover GR in dense environments by virtue of the chameleon mechanism, we find a significant difference, which depends on the environment, between the lensing and dynamical masses of dark matter halos. This environmental dependence of the halo properties can be used as a smoking gun to test GR observationally.

Citation

Zhao, G., Li, B., & Koyama, K. (2011). Testing gravity using the environmental dependence of dark matter halos. Physical Review Letters, 107(7), Article 071303. https://doi.org/10.1103/physrevlett.107.071303

Journal Article Type Article
Publication Date Aug 10, 2011
Deposit Date Jan 20, 2012
Publicly Available Date Mar 29, 2024
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 107
Issue 7
Article Number 071303
DOI https://doi.org/10.1103/physrevlett.107.071303

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