Winther, H. A. and Mota, D. F. and Li, B. (2012) 'Environment dependence of dark matter halos in symmetron modified gravity.', Astrophysical journal., 756 (2). p. 166.
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.
|Keywords:||Cosmology: miscellaneous, Cosmology: theory, Large-scale structure of Universe.|
|Full text:||(VoR) Version of Record|
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|Publisher Web site:||http://dx.doi.org/10.1088/0004-637X/756/2/166|
|Publisher statement:||© 2012. The American Astronomical Society. All rights reserved. Printed in the U.S.A.|
|Date accepted:||No date available|
|Date deposited:||02 May 2014|
|Date of first online publication:||September 2012|
|Date first made open access:||No date available|
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