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Environment dependence of dark matter halos in symmetron modified gravity

Winther, H.A.; Mota, D.F.; Li, B.

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Authors

H.A. Winther

D.F. Mota



Abstract

We investigate the environment dependence of dark matter halos in the symmetron modified gravity scenario. The symmetron is one of three known mechanisms for screening a fifth force and thereby recovering general relativity in dense environments. The effectiveness of the screening depends on both the mass of the object and the environment it lies in. Using high-resolution N-body simulations we find a significant difference, which depends on the halo's mass and environment, between the lensing and dynamical masses of dark matter halos similar to the f(R) modified gravity. The symmetron can however yield stronger signatures due to a freedom in the strength of coupling to matter.

Citation

Winther, H., Mota, D., & Li, B. (2012). Environment dependence of dark matter halos in symmetron modified gravity. Astrophysical Journal, 756(2), Article 166. https://doi.org/10.1088/0004-637x/756/2/166

Journal Article Type Article
Publication Date Sep 10, 2012
Deposit Date Jan 20, 2012
Publicly Available Date May 2, 2014
Journal Astrophysical Journal
Print ISSN 0004-637X
Electronic ISSN 1538-4357
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 756
Issue 2
Article Number 166
DOI https://doi.org/10.1088/0004-637x/756/2/166
Keywords Cosmology: miscellaneous, Cosmology: theory, Large-scale structure of Universe.

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Copyright Statement
© 2012. The American Astronomical Society. All rights reserved. Printed in the U.S.A.






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