Probing the dark matter density evolution law with large scale structures

Bora, Kamal and Holanda, R. F. L. and Desai, Shantanu (2021) Probing the dark matter density evolution law with large scale structures. The European Physical Journal C, 81 (7). pp. 1-7. ISSN 1434-6044

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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

Additional Information:

We are grateful to the anonymous referee for useful constructive feedback on the manuscript. KB would like to thank the Department of Science and Technology, Government of India for providing the financial support under DST-INSPIRE Fellowship program. RFLH thanks CNPq No.428755/2018-6 and 305930/2017-6.

Uncontrolled Keywords:

Strong Legacy Survey SL2S, and SLACS; along with galaxy cluster X-ray

Subjects:

Physics

Divisions:

Department of Physics

Depositing User:

. LibTrainee 2021

Date Deposited:

06 Sep 2022 11:40

Last Modified:

06 Sep 2022 11:40