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arXiv · 2105.02168

Probing the dark matter density evolution law with large scale structures

Kamal Bora·R. F. L. Holanda·Shantanu Desai
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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 $ρ_c(z) \propto (1+z)^{3+ε}$, 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.

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Kamal Bora, R. F. L. Holanda, Shantanu Desai. 2021-07-06. Probing the dark matter density evolution law with large scale structures. https://doi.org/10.1140/epjc%2Fs10052-021-09421-0

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