HESS J0632+057: hydrodynamics and non-thermal emission

HESS J0632+057 is an eccentric gamma-ray Be binary that produces non-thermal radio, Xrays, GeV and very high-energy gamma-rays. The non-thermal emission of HESS J0632+057 is modulated with the orbital period, with a dominant maximum before apastron passage. The nature of the compact object in HESS J...

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Autores: Bosch i Ramon, Valentí, Barkov, M. V., Mignone, Andrea, Bordas Coma, Pol
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/164720
Acceso en línea:https://hdl.handle.net/2445/164720
Access Level:acceso abierto
Palabra clave:Raigs X
Raigs gamma
Estels binaris de raigs X
Hidrodinàmica
X-rays
Gamma rays
X-ray binaries
Hydrodynamics
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spelling HESS J0632+057: hydrodynamics and non-thermal emissionBosch i Ramon, ValentíBarkov, M. V.Mignone, AndreaBordas Coma, PolRaigs XRaigs gammaEstels binaris de raigs XHidrodinàmicaX-raysGamma raysX-ray binariesHydrodynamicsHESS J0632+057 is an eccentric gamma-ray Be binary that produces non-thermal radio, Xrays, GeV and very high-energy gamma-rays. The non-thermal emission of HESS J0632+057 is modulated with the orbital period, with a dominant maximum before apastron passage. The nature of the compact object in HESS J0632+057 is not known, although it has been proposed to be a young pulsar as in PSR B1259-63, the only gamma-ray emitting high-mass binary known to host a non-accreting pulsar. In this letter, we present hydrodynamical simulations of HESS J0632+057 in the context of a pulsar and a stellar wind interacting in an eccentric binary, and propose a scenario for the non-thermal phenomenology of the source. In this scenario, the non-thermal activity before and around apastron is linked to the accumulation of non-thermal particles in the vicinity of the binary, and the sudden drop of the emission before apastron is produced by the disruption of the two-wind interaction structure, allowing these particles to escape efficiently. In addition to providing a framework to explain the nonthermal phenomenology of the source, this scenario predicts extended, moving X-ray emitting structures similar to those observed in PSR B1259-63Royal Astronomical Society2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/164720Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1093/mnrasl/slx124Monthly Notices of the Royal Astronomical Society, 2017, vol. 471, num. 1, p. L150-L154https://doi.org/10.1093/mnrasl/slx124info:eu-repo/grantAgreement/EC/FP7/321520(c) Bosch i Ramon, Valentí et al., 2017info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1647202026-05-27T06:46:51Z
dc.title.none.fl_str_mv HESS J0632+057: hydrodynamics and non-thermal emission
title HESS J0632+057: hydrodynamics and non-thermal emission
spellingShingle HESS J0632+057: hydrodynamics and non-thermal emission
Bosch i Ramon, Valentí
Raigs X
Raigs gamma
Estels binaris de raigs X
Hidrodinàmica
X-rays
Gamma rays
X-ray binaries
Hydrodynamics
title_short HESS J0632+057: hydrodynamics and non-thermal emission
title_full HESS J0632+057: hydrodynamics and non-thermal emission
title_fullStr HESS J0632+057: hydrodynamics and non-thermal emission
title_full_unstemmed HESS J0632+057: hydrodynamics and non-thermal emission
title_sort HESS J0632+057: hydrodynamics and non-thermal emission
dc.creator.none.fl_str_mv Bosch i Ramon, Valentí
Barkov, M. V.
Mignone, Andrea
Bordas Coma, Pol
author Bosch i Ramon, Valentí
author_facet Bosch i Ramon, Valentí
Barkov, M. V.
Mignone, Andrea
Bordas Coma, Pol
author_role author
author2 Barkov, M. V.
Mignone, Andrea
Bordas Coma, Pol
author2_role author
author
author
dc.subject.none.fl_str_mv Raigs X
Raigs gamma
Estels binaris de raigs X
Hidrodinàmica
X-rays
Gamma rays
X-ray binaries
Hydrodynamics
topic Raigs X
Raigs gamma
Estels binaris de raigs X
Hidrodinàmica
X-rays
Gamma rays
X-ray binaries
Hydrodynamics
description HESS J0632+057 is an eccentric gamma-ray Be binary that produces non-thermal radio, Xrays, GeV and very high-energy gamma-rays. The non-thermal emission of HESS J0632+057 is modulated with the orbital period, with a dominant maximum before apastron passage. The nature of the compact object in HESS J0632+057 is not known, although it has been proposed to be a young pulsar as in PSR B1259-63, the only gamma-ray emitting high-mass binary known to host a non-accreting pulsar. In this letter, we present hydrodynamical simulations of HESS J0632+057 in the context of a pulsar and a stellar wind interacting in an eccentric binary, and propose a scenario for the non-thermal phenomenology of the source. In this scenario, the non-thermal activity before and around apastron is linked to the accumulation of non-thermal particles in the vicinity of the binary, and the sudden drop of the emission before apastron is produced by the disruption of the two-wind interaction structure, allowing these particles to escape efficiently. In addition to providing a framework to explain the nonthermal phenomenology of the source, this scenario predicts extended, moving X-ray emitting structures similar to those observed in PSR B1259-63
publishDate 2017
dc.date.none.fl_str_mv 2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/164720
url https://hdl.handle.net/2445/164720
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1093/mnrasl/slx124
Monthly Notices of the Royal Astronomical Society, 2017, vol. 471, num. 1, p. L150-L154
https://doi.org/10.1093/mnrasl/slx124
info:eu-repo/grantAgreement/EC/FP7/321520
dc.rights.none.fl_str_mv (c) Bosch i Ramon, Valentí et al., 2017
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Bosch i Ramon, Valentí et al., 2017
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Royal Astronomical Society
publisher.none.fl_str_mv Royal Astronomical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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