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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/87527
Ver los metadatos del registro completo
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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 http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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http://sedici.unlp.edu.ar/handle/10915/87527 |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/issn/0004-6361 info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201730556 |
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