1. Searching for Primordial Black Holes in the Radio and X-Ray Sky
- Author
-
Riley M. T. Connors, Daniele Gaggero, Gianfranco Bertone, Emma Storm, Francesca Calore, Mark R. Lovell, Sera Markoff, GRAPPA (ITFA, IoP, FNWI), Faculty of Science, High Energy Astrophys. & Astropart. Phys (API, FNWI), Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), and Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Milky Way ,media_common.quotation_subject ,Astrophysics::High Energy Astrophysical Phenomena ,Dark matter ,Population ,General Physics and Astronomy ,FOS: Physical sciences ,Primordial black hole ,Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,01 natural sciences ,General Relativity and Quantum Cosmology ,0103 physical sciences ,education ,010303 astronomy & astrophysics ,Astrophysics::Galaxy Astrophysics ,media_common ,Physics ,High Energy Astrophysical Phenomena (astro-ph.HE) ,education.field_of_study ,010308 nuclear & particles physics ,Astronomy ,Accretion (astrophysics) ,Sky ,Intermediate-mass black hole ,Stellar black hole ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
We model the accretion of gas onto a population of massive primordial black holes in the Milky Way, and compare the predicted radio and X-ray emission with observational data. We show that under conservative assumptions on the accretion process, the possibility that ${\cal O}(10) \, M_\odot$ primordial black holes can account for all of the dark matter in the Milky Way is excluded at $5\sigma$ by a comparison with a VLA radio catalog at $1.4$ GHz, and at $\simeq 40\sigma$ by a comparison with a Chandra X-ray catalog ($0.5 - 8$ keV). We argue that this method can be used to identify such a population of primordial black holes with more sensitive future radio and X-ray surveys., Comment: 5 pages, 2 figures
- Published
- 2017