Mechanical feedback effects on primordial black hole accretion

Context. Dark matter may consist, at least partially, of primordial black holes formed during the radiation-dominated era. The radiation produced by accretion onto primordial black holes leaves characteristic signatures on the properties of the medium at high redshift, before and after hydrogen reco...

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Autores: Bosch i Ramon, Valentí, Bellomo, Nicola
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/169620
Acceso en línea:https://hdl.handle.net/2445/169620
Access Level:acceso abierto
Palabra clave:Forats negres (Astronomia)
Matèria fosca (Astronomia)
Black holes (Astronomy)
Dark matter (Astronomy)
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repository_id_str
spelling Mechanical feedback effects on primordial black hole accretionBosch i Ramon, ValentíBellomo, NicolaForats negres (Astronomia)Matèria fosca (Astronomia)Black holes (Astronomy)Dark matter (Astronomy)Context. Dark matter may consist, at least partially, of primordial black holes formed during the radiation-dominated era. The radiation produced by accretion onto primordial black holes leaves characteristic signatures on the properties of the medium at high redshift, before and after hydrogen recombination. Therefore, reliable modeling of accretion onto these objects is required to obtain robust constraints on their abundance. Aims. We investigate the effect of mechanical feedback, that is, the impact of outflows (winds and- or -jets) on the medium, on primordial black hole accretion, and thereby on the associated radiation. Methods. Using analytical and numerical calculations, we studied for the first time the possibility that outflows can reduce the accretion rate of primordial black holes with masses similar to those detected by the LIGO-Virgo collaboration. Results. Despite the complexity of the accretion rate evolution, mechanical feedback is useful in to significantly reducing the primordial black hole accretion rate, at least by one order of magnitude, when outflows are aligned with the motion of the compact object. If the outflow is perpendicular to the direction of motion, the effect is less important, but it is still non-negligible. Conclusions. Outflows from primordial black holes, even rather weak ones, can significantly decrease the accretion rate, effectively weakening abundance constraints on these objects. Our results motivate further numerical simulations with a more realistic setup, which would yield more precise quantitative predictions.EDP Sciences2020202020202020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion9 p.application/pdfhttps://hdl.handle.net/2445/169620Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1051/0004-6361/202037537Astronomy & Astrophysics, 2020, vol. 638, p. 132-140https://doi.org/10.1051/0004-6361/202037537(c) The European Southern Observatory (ESO), 2020info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1696202026-05-29T05:05:01Z
dc.title.none.fl_str_mv Mechanical feedback effects on primordial black hole accretion
title Mechanical feedback effects on primordial black hole accretion
spellingShingle Mechanical feedback effects on primordial black hole accretion
Bosch i Ramon, Valentí
Forats negres (Astronomia)
Matèria fosca (Astronomia)
Black holes (Astronomy)
Dark matter (Astronomy)
title_short Mechanical feedback effects on primordial black hole accretion
title_full Mechanical feedback effects on primordial black hole accretion
title_fullStr Mechanical feedback effects on primordial black hole accretion
title_full_unstemmed Mechanical feedback effects on primordial black hole accretion
title_sort Mechanical feedback effects on primordial black hole accretion
dc.creator.none.fl_str_mv Bosch i Ramon, Valentí
Bellomo, Nicola
author Bosch i Ramon, Valentí
author_facet Bosch i Ramon, Valentí
Bellomo, Nicola
author_role author
author2 Bellomo, Nicola
author2_role author
dc.subject.none.fl_str_mv Forats negres (Astronomia)
Matèria fosca (Astronomia)
Black holes (Astronomy)
Dark matter (Astronomy)
topic Forats negres (Astronomia)
Matèria fosca (Astronomia)
Black holes (Astronomy)
Dark matter (Astronomy)
description Context. Dark matter may consist, at least partially, of primordial black holes formed during the radiation-dominated era. The radiation produced by accretion onto primordial black holes leaves characteristic signatures on the properties of the medium at high redshift, before and after hydrogen recombination. Therefore, reliable modeling of accretion onto these objects is required to obtain robust constraints on their abundance. Aims. We investigate the effect of mechanical feedback, that is, the impact of outflows (winds and- or -jets) on the medium, on primordial black hole accretion, and thereby on the associated radiation. Methods. Using analytical and numerical calculations, we studied for the first time the possibility that outflows can reduce the accretion rate of primordial black holes with masses similar to those detected by the LIGO-Virgo collaboration. Results. Despite the complexity of the accretion rate evolution, mechanical feedback is useful in to significantly reducing the primordial black hole accretion rate, at least by one order of magnitude, when outflows are aligned with the motion of the compact object. If the outflow is perpendicular to the direction of motion, the effect is less important, but it is still non-negligible. Conclusions. Outflows from primordial black holes, even rather weak ones, can significantly decrease the accretion rate, effectively weakening abundance constraints on these objects. Our results motivate further numerical simulations with a more realistic setup, which would yield more precise quantitative predictions.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/169620
url https://hdl.handle.net/2445/169620
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1051/0004-6361/202037537
Astronomy & Astrophysics, 2020, vol. 638, p. 132-140
https://doi.org/10.1051/0004-6361/202037537
dc.rights.none.fl_str_mv (c) The European Southern Observatory (ESO), 2020
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) The European Southern Observatory (ESO), 2020
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 9 p.
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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