Mechanism for fast radio bursts

Fast radio bursts are mysterious transient sources likely located at cosmological distances. The derived brightness temperatures exceed by many orders of magnitude the self-absorption limit of incoherent synchrotron radiation, implying the operation of a coherent emission process. We propose a radia...

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Detalles Bibliográficos
Autores: Romero, Gustavo Esteban, Valle, María Victoria del, Vieyro, Florencia Laura
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:Argentina
Institución:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/125837
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125837
Access Level:acceso abierto
Palabra clave:Ciencias Exactas
Física
Physics
Fast radio bursts
Radiation mechanism
Astrophysical scenarios
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spelling Mechanism for fast radio burstsRomero, Gustavo EstebanValle, María Victoria delVieyro, Florencia LauraCiencias ExactasFísicaPhysicsFast radio burstsRadiation mechanismAstrophysical scenariosFast radio bursts are mysterious transient sources likely located at cosmological distances. The derived brightness temperatures exceed by many orders of magnitude the self-absorption limit of incoherent synchrotron radiation, implying the operation of a coherent emission process. We propose a radiation mechanism for fast radio bursts where the emission arises from collisionless bremsstrahlung in strong plasma turbulence excited by relativistic electron beams. We discuss possible astrophysical scenarios in which this process might operate. The emitting region is a turbulent plasma hit by a relativistic jet, where Langmuir plasma waves produce a concentration of intense electrostatic soliton-like regions (cavitons). The resulting radiation is coherent and, under some physical conditions, can be polarized and have a power-law distribution in energy. We obtain radio luminosities in agreement with the inferred values for fast radio bursts. The time scale of the radio flare in some cases can be extremely fast, of the order of 10⁻³ s. The mechanism we present here can explain the main features of fast radio bursts and is plausible in different astrophysical sources, such as gamma-ray bursts and some active galactic nuclei.Facultad de Ciencias Astronómicas y GeofísicasInstituto Argentino de Radioastronomía2016-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/125837enginfo:eu-repo/semantics/altIdentifier/issn/2470-0010info:eu-repo/semantics/altIdentifier/issn/2470-0029info:eu-repo/semantics/altIdentifier/arxiv/1512.03772info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.93.023001info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2024-05-08T13:08:37Zoai:sedici.unlp.edu.ar:10915/125837Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 13:08:37.745SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Mechanism for fast radio bursts
title Mechanism for fast radio bursts
spellingShingle Mechanism for fast radio bursts
Romero, Gustavo Esteban
Ciencias Exactas
Física
Physics
Fast radio bursts
Radiation mechanism
Astrophysical scenarios
title_short Mechanism for fast radio bursts
title_full Mechanism for fast radio bursts
title_fullStr Mechanism for fast radio bursts
title_full_unstemmed Mechanism for fast radio bursts
title_sort Mechanism for fast radio bursts
dc.creator.none.fl_str_mv Romero, Gustavo Esteban
Valle, María Victoria del
Vieyro, Florencia Laura
author Romero, Gustavo Esteban
author_facet Romero, Gustavo Esteban
Valle, María Victoria del
Vieyro, Florencia Laura
author_role author
author2 Valle, María Victoria del
Vieyro, Florencia Laura
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
Physics
Fast radio bursts
Radiation mechanism
Astrophysical scenarios
topic Ciencias Exactas
Física
Physics
Fast radio bursts
Radiation mechanism
Astrophysical scenarios
description Fast radio bursts are mysterious transient sources likely located at cosmological distances. The derived brightness temperatures exceed by many orders of magnitude the self-absorption limit of incoherent synchrotron radiation, implying the operation of a coherent emission process. We propose a radiation mechanism for fast radio bursts where the emission arises from collisionless bremsstrahlung in strong plasma turbulence excited by relativistic electron beams. We discuss possible astrophysical scenarios in which this process might operate. The emitting region is a turbulent plasma hit by a relativistic jet, where Langmuir plasma waves produce a concentration of intense electrostatic soliton-like regions (cavitons). The resulting radiation is coherent and, under some physical conditions, can be polarized and have a power-law distribution in energy. We obtain radio luminosities in agreement with the inferred values for fast radio bursts. The time scale of the radio flare in some cases can be extremely fast, of the order of 10⁻³ s. The mechanism we present here can explain the main features of fast radio bursts and is plausible in different astrophysical sources, such as gamma-ray bursts and some active galactic nuclei.
publishDate 2016
dc.date.none.fl_str_mv 2016-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/125837
url http://sedici.unlp.edu.ar/handle/10915/125837
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2470-0010
info:eu-repo/semantics/altIdentifier/issn/2470-0029
info:eu-repo/semantics/altIdentifier/arxiv/1512.03772
info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.93.023001
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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