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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 3 Pith papers

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

  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.

  2. A MINOT-based Study of Gamma-ray emission from SPT-CL J2012-5649/Abell 3667

    astro-ph.HE 2026-05 conditional novelty 4.0 of 10

    MINOT modeling of Abell 3667 predicts a hadronic 1–300 GeV flux of ~1.15e-10 cm^-2 s^-1 at 3.7 R500, matching Fermi-LAT, with ~76% of flux outside R500 and IC subdominant by ~20.

  3. A MINOT-based Study of Gamma-ray emission from SPT-CL J2012-5649/Abell 3667

    astro-ph.HE 2026-05 unverdicted novelty 3.0 of 10

    MINOT modeling of Abell 3667 predicts hadronic gamma-ray flux roughly matching Fermi-LAT observations in the 1-300 GeV band but with a spectral index in tension with the data.

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