2021/05/31 by Kamal Bora, R. F. L. Holanda, Shantanu Desai · 1 citation
Physics and Astronomy · #astro-ph.CO #gr-qc
paper · pdf · doi:10.1140/epjc/s10052-021-09421-0
published as EPJC 81(2021) 596 · 7 pages, 4 figures, I table - Accepted in The European Physical Journal C
arxiv created 2021/07/06 · arxiv updated 2021/11/01
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.