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dc.contributor.author Vieyro, Florencia Laura
dc.contributor.author Romero, Gustavo Esteban
dc.contributor.author Bosch Ramon, Valentí
dc.contributor.author Marcote, B.
dc.contributor.author del Valle, Maria Victoria
dc.date.available 2017-12-19T16:40:00Z
dc.date.issued 2017-06
dc.identifier.citation del Valle, Maria Victoria; Marcote, B.; Bosch Ramon, Valentí; Romero, Gustavo Esteban; Vieyro, Florencia Laura; A model for the repeating FRB 121102 in the AGN scenario; EDP Sciences; Astronomy and Astrophysics; 602; 6-2017
dc.identifier.issn 0004-6361
dc.identifier.uri http://hdl.handle.net/11336/31023
dc.description.abstract 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.
dc.format application/pdf
dc.language.iso eng
dc.publisher EDP Sciences
dc.rights info:eu-repo/semantics/openAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject White dwarfs
dc.subject Jets
dc.subject Radiation mechanisms
dc.subject Radio continuum
dc.subject Non thermal mechanisms
dc.subject.classification Astronomía
dc.subject.classification Ciencias Físicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title A model for the repeating FRB 121102 in the AGN scenario
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2017-11-16T14:44:35Z
dc.journal.volume 602
dc.journal.pais Francia
dc.description.fil Fil: Vieyro, Florencia Laura. Universidad de Barcelona; España. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
dc.description.fil Fil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
dc.description.fil Fil: Bosch Ramon, Valentí. Universidad de Barcelona; España
dc.description.fil Fil: Marcote, B.. Joint Institute for VLBI; Países Bajos
dc.description.fil Fil: del Valle, Maria Victoria. University of Potsdam; Alemania
dc.journal.title Astronomy and Astrophysics
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/201730556
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.aanda.org/10.1051/0004-6361/201730556


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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)