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Title: Effects of primordial black holes quantum gravity decay on galaxy clustering
Author: Raccanelli, Alvise
Vidotto, Francesca
Verde, Licia
Keywords: Cúmuls de galàxies
Forats negres (Astronomia)
Clusters of galaxies
Black holes (Astronomy)
Issue Date: 3-Aug-2018
Publisher: Institute of Physics (IOP)
Abstract: It has been recently suggested that small mass black holes (BHs) may become unstable due to quantum-gravitational effects and eventually decay, producing radiation, on a timescale shorter than the Hawking evaporation time. We argue that the existence of a population of low-mass Primordial Black Holes (PBHs) acting as a fraction of the Universe dark matter component can be used to test proposed models of quantum decay of BHs via their effect on galaxy number counts. We study what constraints future galaxy clustering measurements can set on quantum-gravity parameters governing the BH lifetime and PBH abundance. In case of no detection of such effects, this would rule out either the existence of a non-negligible number of small PBHs, or the BH quantum decay scenario (or both). In case of independent observations of PBHs, the observables discussed here could be used to study the quantum effects that modify the final fate of BHs.
Note: Versió postprint del document publicat a:
It is part of: Journal of Cosmology and Astroparticle Physics, 2018, vol. 2018
Related resource:
ISSN: 1475-7516
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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