A model for the repeating FRB 121102 in the AGN scenario

Autores
Vieyro, Florencia Laura; Romero, Gustavo Esteban; Bosch-Ramon, V.; Marcote, B.; Del Valle, M. V.
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Context. Fast radio bursts (FRBs) are transient sources of unknown origin. Recent radio and optical observations have provided strong evidence for an extragalactic origin of the phenomenon and the precise localization of the repeating FRB 121102. Observations using the Karl G. Jansky Very Large Array (VLA) and very-long-baseline interferometry (VLBI) have revealed the existence of a continuum non-thermal radio source consistent with the location of the bursts in a dwarf galaxy. All these new data rule out several models that were previously proposed, and impose stringent constraints to new models. Aims. We aim to model FRB 121102 in light of the new observational results in the active galactic nucleus (AGN) scenario. Methods. We propose a model for repeating FRBs in which a non-steady relativistic e±-beam, accelerated by an impulsive magnetohydrodynamic driven mechanism, interacts with a cloud at the centre of a star-forming dwarf galaxy. The interaction generates regions of high electrostatic field called cavitons in the plasma cloud. Turbulence is also produced in the beam. These processes, plus particle isotropization, the interaction scale, and light retardation effects, provide the necessary ingredients for short-lived, bright coherent radiation bursts. Results. The mechanism studied in this work explains the general properties of FRB 121102, and may also be applied to other repetitive FRBs. Conclusions. Coherent emission from electrons and positrons accelerated in cavitons provides a plausible explanation of FRBs.
Instituto Argentino de Radioastronomía
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
Galaxies: dwarf
Galaxies: jets
Radiation mechanisms: non-thermal
Radio continuum: general
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/87527

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network_name_str SEDICI (UNLP)
spelling A model for the repeating FRB 121102 in the AGN scenarioVieyro, Florencia LauraRomero, Gustavo EstebanBosch-Ramon, V.Marcote, B.Del Valle, M. V.Ciencias AstronómicasGalaxies: dwarfGalaxies: jetsRadiation mechanisms: non-thermalRadio continuum: general<b>Context.</b> Fast radio bursts (FRBs) are transient sources of unknown origin. Recent radio and optical observations have provided strong evidence for an extragalactic origin of the phenomenon and the precise localization of the repeating FRB 121102. Observations using the Karl G. Jansky Very Large Array (VLA) and very-long-baseline interferometry (VLBI) have revealed the existence of a continuum non-thermal radio source consistent with the location of the bursts in a dwarf galaxy. All these new data rule out several models that were previously proposed, and impose stringent constraints to new models. <b>Aims.</b> We aim to model FRB 121102 in light of the new observational results in the active galactic nucleus (AGN) scenario. <b>Methods.</b> We propose a model for repeating FRBs in which a non-steady relativistic e±-beam, accelerated by an impulsive magnetohydrodynamic driven mechanism, interacts with a cloud at the centre of a star-forming dwarf galaxy. The interaction generates regions of high electrostatic field called cavitons in the plasma cloud. Turbulence is also produced in the beam. These processes, plus particle isotropization, the interaction scale, and light retardation effects, provide the necessary ingredients for short-lived, bright coherent radiation bursts. <b>Results.</b> The mechanism studied in this work explains the general properties of FRB 121102, and may also be applied to other repetitive FRBs. <b>Conclusions.</b> Coherent emission from electrons and positrons accelerated in cavitons provides a plausible explanation of FRBs.Instituto Argentino de RadioastronomíaFacultad de Ciencias Astronómicas y Geofísicas2017-06info: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/10915/87527enginfo:eu-repo/semantics/altIdentifier/issn/0004-6361info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201730556info: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:UNLP2025-09-29T11:17:14Zoai:sedici.unlp.edu.ar:10915/87527Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:17:14.377SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv A model for the repeating FRB 121102 in the AGN scenario
title A model for the repeating FRB 121102 in the AGN scenario
spellingShingle A model for the repeating FRB 121102 in the AGN scenario
Vieyro, Florencia Laura
Ciencias Astronómicas
Galaxies: dwarf
Galaxies: jets
Radiation mechanisms: non-thermal
Radio continuum: general
title_short A model for the repeating FRB 121102 in the AGN scenario
title_full A model for the repeating FRB 121102 in the AGN scenario
title_fullStr A model for the repeating FRB 121102 in the AGN scenario
title_full_unstemmed A model for the repeating FRB 121102 in the AGN scenario
title_sort A model for the repeating FRB 121102 in the AGN scenario
dc.creator.none.fl_str_mv Vieyro, Florencia Laura
Romero, Gustavo Esteban
Bosch-Ramon, V.
Marcote, B.
Del Valle, M. V.
author Vieyro, Florencia Laura
author_facet Vieyro, Florencia Laura
Romero, Gustavo Esteban
Bosch-Ramon, V.
Marcote, B.
Del Valle, M. V.
author_role author
author2 Romero, Gustavo Esteban
Bosch-Ramon, V.
Marcote, B.
Del Valle, M. V.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Galaxies: dwarf
Galaxies: jets
Radiation mechanisms: non-thermal
Radio continuum: general
topic Ciencias Astronómicas
Galaxies: dwarf
Galaxies: jets
Radiation mechanisms: non-thermal
Radio continuum: general
dc.description.none.fl_txt_mv <b>Context.</b> Fast radio bursts (FRBs) are transient sources of unknown origin. Recent radio and optical observations have provided strong evidence for an extragalactic origin of the phenomenon and the precise localization of the repeating FRB 121102. Observations using the Karl G. Jansky Very Large Array (VLA) and very-long-baseline interferometry (VLBI) have revealed the existence of a continuum non-thermal radio source consistent with the location of the bursts in a dwarf galaxy. All these new data rule out several models that were previously proposed, and impose stringent constraints to new models. <b>Aims.</b> We aim to model FRB 121102 in light of the new observational results in the active galactic nucleus (AGN) scenario. <b>Methods.</b> We propose a model for repeating FRBs in which a non-steady relativistic e±-beam, accelerated by an impulsive magnetohydrodynamic driven mechanism, interacts with a cloud at the centre of a star-forming dwarf galaxy. The interaction generates regions of high electrostatic field called cavitons in the plasma cloud. Turbulence is also produced in the beam. These processes, plus particle isotropization, the interaction scale, and light retardation effects, provide the necessary ingredients for short-lived, bright coherent radiation bursts. <b>Results.</b> The mechanism studied in this work explains the general properties of FRB 121102, and may also be applied to other repetitive FRBs. <b>Conclusions.</b> Coherent emission from electrons and positrons accelerated in cavitons provides a plausible explanation of FRBs.
Instituto Argentino de Radioastronomía
Facultad de Ciencias Astronómicas y Geofísicas
description <b>Context.</b> Fast radio bursts (FRBs) are transient sources of unknown origin. Recent radio and optical observations have provided strong evidence for an extragalactic origin of the phenomenon and the precise localization of the repeating FRB 121102. Observations using the Karl G. Jansky Very Large Array (VLA) and very-long-baseline interferometry (VLBI) have revealed the existence of a continuum non-thermal radio source consistent with the location of the bursts in a dwarf galaxy. All these new data rule out several models that were previously proposed, and impose stringent constraints to new models. <b>Aims.</b> We aim to model FRB 121102 in light of the new observational results in the active galactic nucleus (AGN) scenario. <b>Methods.</b> We propose a model for repeating FRBs in which a non-steady relativistic e±-beam, accelerated by an impulsive magnetohydrodynamic driven mechanism, interacts with a cloud at the centre of a star-forming dwarf galaxy. The interaction generates regions of high electrostatic field called cavitons in the plasma cloud. Turbulence is also produced in the beam. These processes, plus particle isotropization, the interaction scale, and light retardation effects, provide the necessary ingredients for short-lived, bright coherent radiation bursts. <b>Results.</b> The mechanism studied in this work explains the general properties of FRB 121102, and may also be applied to other repetitive FRBs. <b>Conclusions.</b> Coherent emission from electrons and positrons accelerated in cavitons provides a plausible explanation of FRBs.
publishDate 2017
dc.date.none.fl_str_mv 2017-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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info:ar-repo/semantics/articulo
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/87527
url http://sedici.unlp.edu.ar/handle/10915/87527
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0004-6361
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201730556
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
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