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Title: New X-ray bound on density of primordial black holes

Abstract

We set a new upper limit on the abundance of primordial black holes (PBH) based on existing X-ray data. PBH interactions with interstellar medium should result in significant fluxes of X-ray photons, which would contribute to the observed number density of compact X-ray objects in galaxies. The data constrain PBH number density in the mass range from a few M {sub ⊙} to 2× 10{sup 7} M {sub ⊙}. PBH density needed to account for the origin of black holes detected by LIGO is marginally allowed.

Authors:
 [1];  [2]
  1. Institute of Space and Astronautical Science JAXA, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 (Japan)
  2. Department of Physics and Astronomy, University of California, Los Angeles, CA 90095-1547 (United States)
Publication Date:
OSTI Identifier:
22667634
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2017; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ABUNDANCE; BLACK HOLES; COSMIC X-RAY SOURCES; DENSITY; GALAXIES; INTERACTIONS; INTERSTELLAR SPACE; MASS; PHOTONS; X RADIATION

Citation Formats

Inoue, Yoshiyuki, and Kusenko, Alexander, E-mail: yinoue@astro.isas.jaxa.jp, E-mail: kusenko@ucla.edu. New X-ray bound on density of primordial black holes. United States: N. p., 2017. Web. doi:10.1088/1475-7516/2017/10/034.
Inoue, Yoshiyuki, & Kusenko, Alexander, E-mail: yinoue@astro.isas.jaxa.jp, E-mail: kusenko@ucla.edu. New X-ray bound on density of primordial black holes. United States. doi:10.1088/1475-7516/2017/10/034.
Inoue, Yoshiyuki, and Kusenko, Alexander, E-mail: yinoue@astro.isas.jaxa.jp, E-mail: kusenko@ucla.edu. Sun . "New X-ray bound on density of primordial black holes". United States. doi:10.1088/1475-7516/2017/10/034.
@article{osti_22667634,
title = {New X-ray bound on density of primordial black holes},
author = {Inoue, Yoshiyuki and Kusenko, Alexander, E-mail: yinoue@astro.isas.jaxa.jp, E-mail: kusenko@ucla.edu},
abstractNote = {We set a new upper limit on the abundance of primordial black holes (PBH) based on existing X-ray data. PBH interactions with interstellar medium should result in significant fluxes of X-ray photons, which would contribute to the observed number density of compact X-ray objects in galaxies. The data constrain PBH number density in the mass range from a few M {sub ⊙} to 2× 10{sup 7} M {sub ⊙}. PBH density needed to account for the origin of black holes detected by LIGO is marginally allowed.},
doi = {10.1088/1475-7516/2017/10/034},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 10,
volume = 2017,
place = {United States},
year = {Sun Oct 01 00:00:00 EDT 2017},
month = {Sun Oct 01 00:00:00 EDT 2017}
}