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A test of the standard dark matter density evolution law using galaxy clusters and cosmic chronometers

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arxiv 2106.15805 v2 pith:ASOETLVS submitted 2021-06-30 astro-ph.CO

classification astro-ph.CO
keywords darkdensityepsilonevolutionmatterchronometerscosmicgalaxy
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abstract

In this letter, we implement a test of the standard law for the dark matter density evolution. For this purpose, only a flat universe and the validity of the FRW metric are assumed. A deformed dark matter density evolution law is considered, given by $\rho_c(z) \propto (1+z)^{3+\epsilon}$, and constraints on $\epsilon$ are obtained by using galaxy cluster gas mass fractions, and cosmic chronometers measurements. We find that $\epsilon =0$ within 2$\sigma$ c.l., in full agreement with other recent analyses.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. A Search for Hard X-ray/Soft $\gamma$-ray Emission from SPT-CL J2012-5649 (Abell 3667) Using INTEGRAL/ISGRI

    astro-ph.HE 2025-12 conditional novelty 5.0 of 10

    INTEGRAL/ISGRI finds no 30–300 keV emission from the merging galaxy cluster Abell 3667, yielding a 3σ upper limit of 4.4×10^-10 erg cm^-2 s^-1 in the 30–100 keV band.

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