Probing the dark matter density evolution law with large scale structures

Bora, K. and Holanda, R.F.L. and Desai, S. (2021) Probing the dark matter density evolution law with large scale structures. European Physical Journal C, 81 (7). ISSN 14346044

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Abstract

We propose a new method to explore a possible departure from the standard time evolution law for the dark matter density. We looked for a violation of this law by using a deformed evolution law, given by ρc(z) ∝ (1 + z) 3+ϵ, and then constrain ϵ. The dataset used for this purpose consists of Strong Gravitational Lensing data obtained from SLOAN Lens ACS, BOSS Emission-line Lens Survey, Strong Legacy Survey SL2S, and SLACS; along with galaxy cluster X-ray gas mass fraction measurements obtained using the Chandra Telescope. Our analyses show that ϵ is consistent with zero within 1 σ c.l., but the current dataset cannot rule out with high confidence level interacting models of dark matter and dark energy. © 2021, The Author(s).

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IITH Creators:	IITH Creators ORCiD Desai, Shantanu http://orcid.org/0000-0002-0466-3288
Item Type:	Article
Subjects:	Physics
Divisions:	Department of Physics
Depositing User:	Mrs Haseena VKKM
Date Deposited:	30 May 2022 09:54
Last Modified:	30 May 2022 09:54
URI:	http://raiithold.iith.ac.in/id/eprint/9277
Publisher URL:	https://link.springer.com/article/10.1140/epjc/s10...
OA policy:	https://v2.sherpa.ac.uk/id/publication/28651
Related URLs:	Author

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