Regular Article - Theoretical Physics
Probing the dark matter density evolution law with large scale structures
Department of Physics, Indian Institute of Technology, Hyderabad, 502285, Kandi, Telangana, India
2 Departamento de Física, Universidade Federal do Rio Grande do Norte, 59072-970, Natal, Rio Grande do Norte, Brazil
3 Departamento de Física, Universidade Federal de Campina Grande, 58429-900, Campina Grande, PB, Brazil
4 Departamento de Física, Universidade Federal de Sergipe, 49100-000, Aracaju, SE, Brazil
Accepted: 4 July 2021
Published online: 9 July 2021
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 , and then constrain . 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 is consistent with zero within 1 c.l., but the current dataset cannot rule out with high confidence level interacting models of dark matter and dark energy.
© The Author(s) 2021
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