Positrons from primordial black hole microquasars and gamma-ray bursts
Abstract
We propose several novel scenarios how capture of small sublunar-mass primordial black holes (PBHs) by compact stars, white dwarfs or neutron stars, can lead to distinct short gamma-ray bursts (sGRBs) as well as microquasars (MQs). In addition to providing new signatures, relativistic jets from these systems will accelerate positrons to high energies. We find that if PBHs constitute a sizable fraction of DM, they can significantly contribute to the excess observed in the positron flux by the Pamela, the AMS-02 and the Fermi-LAT experiments. Our proposal combines the beneficial features of astrophysical sources and dark matter.
- Authors:
- Publication Date:
- Research Org.:
- Univ. of California, Los Angeles, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1489087
- Alternate Identifier(s):
- OSTI ID: 1611258
- Grant/Contract Number:
- SC0009937
- Resource Type:
- Published Article
- Journal Name:
- Physics Letters B
- Additional Journal Information:
- Journal Name: Physics Letters B Journal Volume: 789 Journal Issue: C; Journal ID: ISSN 0370-2693
- Publisher:
- Elsevier
- Country of Publication:
- Netherlands
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; astronomy & astrophysics; physics
Citation Formats
Takhistov, Volodymyr. Positrons from primordial black hole microquasars and gamma-ray bursts. Netherlands: N. p., 2019.
Web. doi:10.1016/j.physletb.2018.12.043.
Takhistov, Volodymyr. Positrons from primordial black hole microquasars and gamma-ray bursts. Netherlands. https://doi.org/10.1016/j.physletb.2018.12.043
Takhistov, Volodymyr. Fri .
"Positrons from primordial black hole microquasars and gamma-ray bursts". Netherlands. https://doi.org/10.1016/j.physletb.2018.12.043.
@article{osti_1489087,
title = {Positrons from primordial black hole microquasars and gamma-ray bursts},
author = {Takhistov, Volodymyr},
abstractNote = {We propose several novel scenarios how capture of small sublunar-mass primordial black holes (PBHs) by compact stars, white dwarfs or neutron stars, can lead to distinct short gamma-ray bursts (sGRBs) as well as microquasars (MQs). In addition to providing new signatures, relativistic jets from these systems will accelerate positrons to high energies. We find that if PBHs constitute a sizable fraction of DM, they can significantly contribute to the excess observed in the positron flux by the Pamela, the AMS-02 and the Fermi-LAT experiments. Our proposal combines the beneficial features of astrophysical sources and dark matter.},
doi = {10.1016/j.physletb.2018.12.043},
journal = {Physics Letters B},
number = C,
volume = 789,
place = {Netherlands},
year = {Fri Feb 01 00:00:00 EST 2019},
month = {Fri Feb 01 00:00:00 EST 2019}
}
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https://doi.org/10.1016/j.physletb.2018.12.043
https://doi.org/10.1016/j.physletb.2018.12.043
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Cited by: 18 works
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Works referencing / citing this record:
Revisiting constraints on asteroid-mass primordial black holes as dark matter candidates
journal, August 2019
- Montero-Camacho, Paulo; Fang, Xiao; Vasquez, Gabriel
- Journal of Cosmology and Astroparticle Physics, Vol. 2019, Issue 08
Analytic description of primordial black hole formation from scalar field fragmentation
journal, October 2019
- Cotner, Eric; Kusenko, Alexander; Sasaki, Misao
- Journal of Cosmology and Astroparticle Physics, Vol. 2019, Issue 10