Magic upper limits on the very high energy emission from gamma-ray bursts

During its first data cycle, between 2005 and the beginning of 2006, the fast repositioning system of the MAGIC telescope allowed the observation of nine different gamma-ray bursts as possible sources of very high energy γ-rays. These observations were triggered by alerts from Swift, HETE-2, and INT...

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Detalles Bibliográficos
Autores: MAGIC Collaboration, Paredes i Poy, Josep Maria, Ribó Gomis, Marc, Bosch i Ramon, Valentí
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2007
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/150830
Acceso en línea:https://hdl.handle.net/2445/150830
Access Level:acceso abierto
Palabra clave:Astronomia de raigs gamma
Observacions astronòmiques
Gamma ray astronomy
Astronomical observations
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spelling Magic upper limits on the very high energy emission from gamma-ray burstsMAGIC CollaborationParedes i Poy, Josep MariaRibó Gomis, MarcBosch i Ramon, ValentíAstronomia de raigs gammaObservacions astronòmiquesGamma ray astronomyAstronomical observationsDuring its first data cycle, between 2005 and the beginning of 2006, the fast repositioning system of the MAGIC telescope allowed the observation of nine different gamma-ray bursts as possible sources of very high energy γ-rays. These observations were triggered by alerts from Swift, HETE-2, and INTEGRAL; they started as quickly as possible after the alerts and lasted for several minutes, with an energy threshold varying between 80 and 200 GeV, depending on the zenith angle of the burst. No evidence for gamma signals was found, and upper limits for the flux were derived for all events using the standard analysis chain of MAGIC. For the bursts with measured redshifts, the upper limits are compatible with a power-law extrapolation, when the intrinsic fluxes are evaluated taking into account the attenuation due to the scattering in the metagalactic radiation field.Institute of Physics (IOP)2007info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/150830Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1086/520761Astrophysical Journal, 2007, vol. 667, p. 358-366https://doi.org/10.1086/520761(c) American Astronomical Society, 2007info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1508302026-05-27T06:46:51Z
dc.title.none.fl_str_mv Magic upper limits on the very high energy emission from gamma-ray bursts
title Magic upper limits on the very high energy emission from gamma-ray bursts
spellingShingle Magic upper limits on the very high energy emission from gamma-ray bursts
MAGIC Collaboration
Astronomia de raigs gamma
Observacions astronòmiques
Gamma ray astronomy
Astronomical observations
title_short Magic upper limits on the very high energy emission from gamma-ray bursts
title_full Magic upper limits on the very high energy emission from gamma-ray bursts
title_fullStr Magic upper limits on the very high energy emission from gamma-ray bursts
title_full_unstemmed Magic upper limits on the very high energy emission from gamma-ray bursts
title_sort Magic upper limits on the very high energy emission from gamma-ray bursts
dc.creator.none.fl_str_mv MAGIC Collaboration
Paredes i Poy, Josep Maria
Ribó Gomis, Marc
Bosch i Ramon, Valentí
author MAGIC Collaboration
author_facet MAGIC Collaboration
Paredes i Poy, Josep Maria
Ribó Gomis, Marc
Bosch i Ramon, Valentí
author_role author
author2 Paredes i Poy, Josep Maria
Ribó Gomis, Marc
Bosch i Ramon, Valentí
author2_role author
author
author
dc.subject.none.fl_str_mv Astronomia de raigs gamma
Observacions astronòmiques
Gamma ray astronomy
Astronomical observations
topic Astronomia de raigs gamma
Observacions astronòmiques
Gamma ray astronomy
Astronomical observations
description During its first data cycle, between 2005 and the beginning of 2006, the fast repositioning system of the MAGIC telescope allowed the observation of nine different gamma-ray bursts as possible sources of very high energy γ-rays. These observations were triggered by alerts from Swift, HETE-2, and INTEGRAL; they started as quickly as possible after the alerts and lasted for several minutes, with an energy threshold varying between 80 and 200 GeV, depending on the zenith angle of the burst. No evidence for gamma signals was found, and upper limits for the flux were derived for all events using the standard analysis chain of MAGIC. For the bursts with measured redshifts, the upper limits are compatible with a power-law extrapolation, when the intrinsic fluxes are evaluated taking into account the attenuation due to the scattering in the metagalactic radiation field.
publishDate 2007
dc.date.none.fl_str_mv 2007
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/2445/150830
url https://hdl.handle.net/2445/150830
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/10.1086/520761
Astrophysical Journal, 2007, vol. 667, p. 358-366
https://doi.org/10.1086/520761
dc.rights.none.fl_str_mv (c) American Astronomical Society, 2007
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Astronomical Society, 2007
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Institute of Physics (IOP)
publisher.none.fl_str_mv Institute of Physics (IOP)
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
_version_ 1869408541531439104
score 15.300719

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