A model for the repeating FRB 121102 in the AGN scenario

<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. Jan...

Descripción completa

Detalles Bibliográficos
Autores principales: Vieyro, Florencia Laura, Romero, Gustavo Esteban, Bosch-Ramon, V., Marcote, B., Del Valle, M. V.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Astronómicas
Galaxies: dwarf
Galaxies: jets
Radiation mechanisms: non-thermal
Radio continuum: general
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/87527
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-87527
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Galaxies: dwarf
Galaxies: jets
Radiation mechanisms: non-thermal
Radio continuum: general
spellingShingle Ciencias Astronómicas
Galaxies: dwarf
Galaxies: jets
Radiation mechanisms: non-thermal
Radio continuum: general
Vieyro, Florencia Laura
Romero, Gustavo Esteban
Bosch-Ramon, V.
Marcote, B.
Del Valle, M. V.
A model for the repeating FRB 121102 in the AGN scenario
topic_facet Ciencias Astronómicas
Galaxies: dwarf
Galaxies: jets
Radiation mechanisms: non-thermal
Radio continuum: general
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.
format Articulo
Articulo
author Vieyro, Florencia Laura
Romero, Gustavo Esteban
Bosch-Ramon, V.
Marcote, B.
Del Valle, M. V.
author_facet Vieyro, Florencia Laura
Romero, Gustavo Esteban
Bosch-Ramon, V.
Marcote, B.
Del Valle, M. V.
author_sort Vieyro, Florencia Laura
title A model for the repeating FRB 121102 in the AGN scenario
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 model for the repeating frb 121102 in the agn scenario
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/87527
work_keys_str_mv AT vieyroflorencialaura amodelfortherepeatingfrb121102intheagnscenario
AT romerogustavoesteban amodelfortherepeatingfrb121102intheagnscenario
AT boschramonv amodelfortherepeatingfrb121102intheagnscenario
AT marcoteb amodelfortherepeatingfrb121102intheagnscenario
AT delvallemv amodelfortherepeatingfrb121102intheagnscenario
AT vieyroflorencialaura modelfortherepeatingfrb121102intheagnscenario
AT romerogustavoesteban modelfortherepeatingfrb121102intheagnscenario
AT boschramonv modelfortherepeatingfrb121102intheagnscenario
AT marcoteb modelfortherepeatingfrb121102intheagnscenario
AT delvallemv modelfortherepeatingfrb121102intheagnscenario
bdutipo_str Repositorios
_version_ 1764820490156769281

Ejemplares similares