Gas heating from spinning and non-spinning evaporating primordial black holes

Gas heating from spinning and non-spinning evaporating primordial black holes

Primordial black holes (PBHs) from the early Universe constitute a viable dark matter (DM) candidate and can span many orders of magnitude in mass. Light PBHs with masses around 1015 g contribute to DM and will efficiently evaporate through Hawking radiation at present time, leading to a slew of obs...

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Main Authors: Ranjan Laha, Philip Lu, Volodymyr Takhistov
Format: Article
Language:English
Published: Elsevier 2021-09-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269321003993
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spelling doaj-66836d10f47a46eea743260bb13d54442021-10-09T04:35:30ZengElsevierPhysics Letters B0370-26932021-09-01820136459Gas heating from spinning and non-spinning evaporating primordial black holesRanjan Laha0Philip Lu1Volodymyr Takhistov2Theoretical Physics Department, CERN, 1211 Geneva, Switzerland; Centre for High Energy Physics, Indian Institute of Science, Bangalore 560012, IndiaDepartment of Physics and Astronomy, University of California, Los Angeles, Los Angeles, CA, 90095-1547, USADepartment of Physics and Astronomy, University of California, Los Angeles, Los Angeles, CA, 90095-1547, USA; Kavli Institute for the Physics and Mathematics of the Universe (WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan; Corresponding author.Primordial black holes (PBHs) from the early Universe constitute a viable dark matter (DM) candidate and can span many orders of magnitude in mass. Light PBHs with masses around 1015 g contribute to DM and will efficiently evaporate through Hawking radiation at present time, leading to a slew of observable signatures. The emission will deposit energy and heat in the surrounding interstellar medium. We revisit the constraints from dwarf galaxy heating by evaporating non-spinning PBHs and find that conservative constraints from Leo T dwarf galaxy are significantly weaker than previously suggested. Furthermore, we analyze gas heating from spinning evaporating PBHs. The resulting limits on PBH DM abundance are found to be stronger for evaporating spinning PBHs than for non-spinning PBHs.http://www.sciencedirect.com/science/article/pii/S0370269321003993
collection DOAJ
language English
format Article
sources DOAJ
author Ranjan Laha
Philip Lu
Volodymyr Takhistov
spellingShingle Ranjan Laha
Philip Lu
Volodymyr Takhistov
Gas heating from spinning and non-spinning evaporating primordial black holes
Physics Letters B
author_facet Ranjan Laha
Philip Lu
Volodymyr Takhistov
author_sort Ranjan Laha
title Gas heating from spinning and non-spinning evaporating primordial black holes
title_short Gas heating from spinning and non-spinning evaporating primordial black holes
title_full Gas heating from spinning and non-spinning evaporating primordial black holes
title_fullStr Gas heating from spinning and non-spinning evaporating primordial black holes
title_full_unstemmed Gas heating from spinning and non-spinning evaporating primordial black holes
title_sort gas heating from spinning and non-spinning evaporating primordial black holes
publisher Elsevier
series Physics Letters B
issn 0370-2693
publishDate 2021-09-01
description Primordial black holes (PBHs) from the early Universe constitute a viable dark matter (DM) candidate and can span many orders of magnitude in mass. Light PBHs with masses around 1015 g contribute to DM and will efficiently evaporate through Hawking radiation at present time, leading to a slew of observable signatures. The emission will deposit energy and heat in the surrounding interstellar medium. We revisit the constraints from dwarf galaxy heating by evaporating non-spinning PBHs and find that conservative constraints from Leo T dwarf galaxy are significantly weaker than previously suggested. Furthermore, we analyze gas heating from spinning evaporating PBHs. The resulting limits on PBH DM abundance are found to be stronger for evaporating spinning PBHs than for non-spinning PBHs.
url http://www.sciencedirect.com/science/article/pii/S0370269321003993
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AT philiplu gasheatingfromspinningandnonspinningevaporatingprimordialblackholes
AT volodymyrtakhistov gasheatingfromspinningandnonspinningevaporatingprimordialblackholes
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