No obvious change in the number density of galaxies up to z ≈ 3.5

Abstract : The analysis of the cumulative count of sources of gamma-ray bursts as a function of their redshift strongly suggests that the number density of star-forming galaxies is roughly constant, up to z ≈ 3.5. The analysis of the cumulative count of galaxies in the Hubble Ultra Deep Field further shows that the overall number density of galaxies is constant as well, up to z ≈ 2 at least. Since ΛCDM does not seem able to cope with the age of old objects, both analyses were performed using a non-standard redshift-distance relationship.
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https://hal.archives-ouvertes.fr/hal-02019920
Contributor : Yves-Henri Sanejouand <>
Submitted on : Thursday, February 14, 2019 - 7:13:49 PM
Last modification on : Saturday, June 15, 2019 - 1:25:38 AM

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Yves-Henri Sanejouand. No obvious change in the number density of galaxies up to z ≈ 3.5. 2019. ⟨hal-02019920⟩

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