Produção Nacional
Revisado por pares
Probing the dark matter density evolution law with large scale structures
2021; Springer Science+Business Media; Volume: 81; Issue: 7 Linguagem: Inglês
10.1140/epjc/s10052-021-09421-0
ISSN1434-6052
AutoresKamal Bora, R. F. L. Holanda, S. Desai,
Tópico(s)Dark Matter and Cosmic Phenomena
ResumoAbstract 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 $$\rho _c(z) \propto (1+z)^{3+\epsilon }$$ ρ c ( z ) ∝ ( 1 + z ) 3 + ϵ , and then constrain $$\epsilon $$ 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 $$\epsilon $$ ϵ is consistent with zero within 1 $$\sigma $$ 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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