Very high-energy γ-ray observations of novae and dwarf novae with the MAGIC telescopes

Context. In the last five years the Fermi Large Area Telescope (LAT) instrument detected GeV γ-ray emission from five novae. The GeV emission can be interpreted in terms of an inverse Compton process of electrons accelerated in a shock. In this case it is expected that protons in the same conditions...

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Autores: MAGIC Collaboration, Marcote Martin, Benito, Munar i Adrover, Pere, Paredes i Poy, Josep Maria, Paredes Fortuny, Xavier, Ribó Gomis, Marc, Zanin, Roberta
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/69532
Acesso em linha:https://hdl.handle.net/2445/69532
Access Level:acceso abierto
Palavra-chave:Estels binaris de raigs X
Noves (Estels)
Raigs gamma
X-ray binaries
New stars
Gamma rays
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spelling Very high-energy γ-ray observations of novae and dwarf novae with the MAGIC telescopesMAGIC CollaborationMarcote Martin, BenitoMunar i Adrover, PereParedes i Poy, Josep MariaParedes Fortuny, XavierRibó Gomis, MarcZanin, RobertaEstels binaris de raigs XNoves (Estels)Raigs gammaX-ray binariesNew starsGamma raysContext. In the last five years the Fermi Large Area Telescope (LAT) instrument detected GeV γ-ray emission from five novae. The GeV emission can be interpreted in terms of an inverse Compton process of electrons accelerated in a shock. In this case it is expected that protons in the same conditions can be accelerated to much higher energies. Consequently they may produce a second component in the γ-ray spectrum at TeV energies. Aims: We aim to explore the very high-energy domain to search for γ-ray emission above 50 GeV and to shed light on the acceleration process of leptons and hadrons in nova explosions. Methods: We have performed observations, with the MAGIC telescopes of the classical nova V339 Del shortly after the 2013 outburst; optical and subsequent GeV γ-ray detections triggered the MAGIC observations. We also briefly report on VHE observations of the symbiotic nova YY Her and the dwarf nova ASASSN-13ax. We complement the TeV MAGIC observations with the analysis of contemporaneous Fermi-LAT data of the sources. The TeV and GeV observations are compared in order to evaluate the acceleration parameters for leptons and hadrons. Results: No significant TeV emission was found from the studied sources. We computed upper limits on the spectrum and night-by-night flux. The combined GeV and TeV observations of V339 Del limit the ratio of proton to electron luminosities to Lp ≲ 0.15 Le.Springer Verlag2016201620152016info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion7 p.application/pdfhttps://hdl.handle.net/2445/69532Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: http://dx.doi.org/10.1051/0004-6361/201526478Astronomy and Astrophysics, 2015, vol. 582, p. A67-A74http://dx.doi.org/10.1051/0004-6361/201526478(c) Springer Verlag, 2015info:eu-repo/semantics/openAccessoai:recercat.cat:2445/695322026-05-29T05:05:01Z
dc.title.none.fl_str_mv Very high-energy γ-ray observations of novae and dwarf novae with the MAGIC telescopes
title Very high-energy γ-ray observations of novae and dwarf novae with the MAGIC telescopes
spellingShingle Very high-energy γ-ray observations of novae and dwarf novae with the MAGIC telescopes
MAGIC Collaboration
Estels binaris de raigs X
Noves (Estels)
Raigs gamma
X-ray binaries
New stars
Gamma rays
title_short Very high-energy γ-ray observations of novae and dwarf novae with the MAGIC telescopes
title_full Very high-energy γ-ray observations of novae and dwarf novae with the MAGIC telescopes
title_fullStr Very high-energy γ-ray observations of novae and dwarf novae with the MAGIC telescopes
title_full_unstemmed Very high-energy γ-ray observations of novae and dwarf novae with the MAGIC telescopes
title_sort Very high-energy γ-ray observations of novae and dwarf novae with the MAGIC telescopes
dc.creator.none.fl_str_mv MAGIC Collaboration
Marcote Martin, Benito
Munar i Adrover, Pere
Paredes i Poy, Josep Maria
Paredes Fortuny, Xavier
Ribó Gomis, Marc
Zanin, Roberta
author MAGIC Collaboration
author_facet MAGIC Collaboration
Marcote Martin, Benito
Munar i Adrover, Pere
Paredes i Poy, Josep Maria
Paredes Fortuny, Xavier
Ribó Gomis, Marc
Zanin, Roberta
author_role author
author2 Marcote Martin, Benito
Munar i Adrover, Pere
Paredes i Poy, Josep Maria
Paredes Fortuny, Xavier
Ribó Gomis, Marc
Zanin, Roberta
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Estels binaris de raigs X
Noves (Estels)
Raigs gamma
X-ray binaries
New stars
Gamma rays
topic Estels binaris de raigs X
Noves (Estels)
Raigs gamma
X-ray binaries
New stars
Gamma rays
description Context. In the last five years the Fermi Large Area Telescope (LAT) instrument detected GeV γ-ray emission from five novae. The GeV emission can be interpreted in terms of an inverse Compton process of electrons accelerated in a shock. In this case it is expected that protons in the same conditions can be accelerated to much higher energies. Consequently they may produce a second component in the γ-ray spectrum at TeV energies. Aims: We aim to explore the very high-energy domain to search for γ-ray emission above 50 GeV and to shed light on the acceleration process of leptons and hadrons in nova explosions. Methods: We have performed observations, with the MAGIC telescopes of the classical nova V339 Del shortly after the 2013 outburst; optical and subsequent GeV γ-ray detections triggered the MAGIC observations. We also briefly report on VHE observations of the symbiotic nova YY Her and the dwarf nova ASASSN-13ax. We complement the TeV MAGIC observations with the analysis of contemporaneous Fermi-LAT data of the sources. The TeV and GeV observations are compared in order to evaluate the acceleration parameters for leptons and hadrons. Results: No significant TeV emission was found from the studied sources. We computed upper limits on the spectrum and night-by-night flux. The combined GeV and TeV observations of V339 Del limit the ratio of proton to electron luminosities to Lp ≲ 0.15 Le.
publishDate 2015
dc.date.none.fl_str_mv 2015
2016
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/69532
url https://hdl.handle.net/2445/69532
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: http://dx.doi.org/10.1051/0004-6361/201526478
Astronomy and Astrophysics, 2015, vol. 582, p. A67-A74
http://dx.doi.org/10.1051/0004-6361/201526478
dc.rights.none.fl_str_mv (c) Springer Verlag, 2015
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Springer Verlag, 2015
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 7 p.
application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
publisher.none.fl_str_mv Springer Verlag
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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