MAGIC observations and multiwavelength properties of the quasar 3C 279 in 2007 and 2009

Context. 3C 279, the first quasar discovered to emit VHE gamma-rays by the MAGIC telescope in 2006, was reobserved by MAGIC in January 2007 during a major optical flare and from December 2008 to April 2009 following an alert from the Fermi space telescope on an exceptionally high gamma-ray state. Ai...

ver descrição completa

Detalhes bibliográficos
Autores: Antoranz Canales, Pedro, Barrio Uña, Juan Abel, Contreras González, José Luis, Fonseca González, María Victoria, López Moya, Marcos, Miranda Pantoja, José Miguel
Formato: artículo
Fecha de publicación:2011
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/43892
Acesso em linha:https://hdl.handle.net/20.500.14352/43892
Access Level:acceso abierto
Palavra-chave:537
539.1
Gamma-Ray Flare
Atmospheric Cherenkov Telescope
Spitzer-Space-Telescope
Optical Continuum
Jet
Emission
Blazars
Variability
Radiation
Objects.
Electrónica (Física)
Electricidad
Física nuclear
2202.03 Electricidad
2207 Física Atómica y Nuclear
id ES_aa8d6aa1c9826d663fe60cd1e72fbce5
oai_identifier_str oai:docta.ucm.es:20.500.14352/43892
network_acronym_str ES
network_name_str España
repository_id_str
spelling MAGIC observations and multiwavelength properties of the quasar 3C 279 in 2007 and 2009Antoranz Canales, PedroBarrio Uña, Juan AbelContreras González, José LuisFonseca González, María VictoriaLópez Moya, MarcosMiranda Pantoja, José Miguel537539.1Gamma-Ray FlareAtmospheric Cherenkov TelescopeSpitzer-Space-TelescopeOptical ContinuumJetEmissionBlazarsVariabilityRadiationObjects.Electrónica (Física)ElectricidadFísica nuclear2202.03 Electricidad2207 Física Atómica y NuclearContext. 3C 279, the first quasar discovered to emit VHE gamma-rays by the MAGIC telescope in 2006, was reobserved by MAGIC in January 2007 during a major optical flare and from December 2008 to April 2009 following an alert from the Fermi space telescope on an exceptionally high gamma-ray state. Aims. The January 2007 observations resulted in a detection on January 16 with significance 5.4 sigma, corresponding to a F (>150 GeV) (3.8 +/- 0.8) x 10(-11) ph cm(-2) s(-1) while the overall data sample does not show significant signal. The December 2008-April 2009 observations did not detect the source. We study the multiwavelength behaviour of the source at the epochs of MAGIC observations, collecting quasi-simultaneous data at optical and X-ray frequencies and for 2009 also gamma-ray data from Fermi. Methods. We study the light curves and spectral energy distribution of the source. The spectral energy distributions of three observing epochs (including the February 2006, which has been previously published) are modelled with one-zone inverse Compton models and the emission on January 16, 2007 also with two zone model and with a lepto-hadronic model. Results. We find that the VHE gamma-ray emission detected in 2006 and 2007 challenges standard one-zone model, based on relativistic electrons in a jet scattering broad line region photons, while the other studied models fit the observed spectral energy distribution more satisfactorily.EDP ScienciesUniversidad Complutense de Madrid20112011-06-0120112011-06-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/43892reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/438922026-06-02T12:44:21Z
dc.title.none.fl_str_mv MAGIC observations and multiwavelength properties of the quasar 3C 279 in 2007 and 2009
title MAGIC observations and multiwavelength properties of the quasar 3C 279 in 2007 and 2009
spellingShingle MAGIC observations and multiwavelength properties of the quasar 3C 279 in 2007 and 2009
Antoranz Canales, Pedro
537
539.1
Gamma-Ray Flare
Atmospheric Cherenkov Telescope
Spitzer-Space-Telescope
Optical Continuum
Jet
Emission
Blazars
Variability
Radiation
Objects.
Electrónica (Física)
Electricidad
Física nuclear
2202.03 Electricidad
2207 Física Atómica y Nuclear
title_short MAGIC observations and multiwavelength properties of the quasar 3C 279 in 2007 and 2009
title_full MAGIC observations and multiwavelength properties of the quasar 3C 279 in 2007 and 2009
title_fullStr MAGIC observations and multiwavelength properties of the quasar 3C 279 in 2007 and 2009
title_full_unstemmed MAGIC observations and multiwavelength properties of the quasar 3C 279 in 2007 and 2009
title_sort MAGIC observations and multiwavelength properties of the quasar 3C 279 in 2007 and 2009
dc.creator.none.fl_str_mv Antoranz Canales, Pedro
Barrio Uña, Juan Abel
Contreras González, José Luis
Fonseca González, María Victoria
López Moya, Marcos
Miranda Pantoja, José Miguel
author Antoranz Canales, Pedro
author_facet Antoranz Canales, Pedro
Barrio Uña, Juan Abel
Contreras González, José Luis
Fonseca González, María Victoria
López Moya, Marcos
Miranda Pantoja, José Miguel
author_role author
author2 Barrio Uña, Juan Abel
Contreras González, José Luis
Fonseca González, María Victoria
López Moya, Marcos
Miranda Pantoja, José Miguel
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 537
539.1
Gamma-Ray Flare
Atmospheric Cherenkov Telescope
Spitzer-Space-Telescope
Optical Continuum
Jet
Emission
Blazars
Variability
Radiation
Objects.
Electrónica (Física)
Electricidad
Física nuclear
2202.03 Electricidad
2207 Física Atómica y Nuclear
topic 537
539.1
Gamma-Ray Flare
Atmospheric Cherenkov Telescope
Spitzer-Space-Telescope
Optical Continuum
Jet
Emission
Blazars
Variability
Radiation
Objects.
Electrónica (Física)
Electricidad
Física nuclear
2202.03 Electricidad
2207 Física Atómica y Nuclear
description Context. 3C 279, the first quasar discovered to emit VHE gamma-rays by the MAGIC telescope in 2006, was reobserved by MAGIC in January 2007 during a major optical flare and from December 2008 to April 2009 following an alert from the Fermi space telescope on an exceptionally high gamma-ray state. Aims. The January 2007 observations resulted in a detection on January 16 with significance 5.4 sigma, corresponding to a F (>150 GeV) (3.8 +/- 0.8) x 10(-11) ph cm(-2) s(-1) while the overall data sample does not show significant signal. The December 2008-April 2009 observations did not detect the source. We study the multiwavelength behaviour of the source at the epochs of MAGIC observations, collecting quasi-simultaneous data at optical and X-ray frequencies and for 2009 also gamma-ray data from Fermi. Methods. We study the light curves and spectral energy distribution of the source. The spectral energy distributions of three observing epochs (including the February 2006, which has been previously published) are modelled with one-zone inverse Compton models and the emission on January 16, 2007 also with two zone model and with a lepto-hadronic model. Results. We find that the VHE gamma-ray emission detected in 2006 and 2007 challenges standard one-zone model, based on relativistic electrons in a jet scattering broad line region photons, while the other studied models fit the observed spectral energy distribution more satisfactorily.
publishDate 2011
dc.date.none.fl_str_mv 2011
2011-06-01
2011
2011-06-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/43892
url https://hdl.handle.net/20.500.14352/43892
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv EDP Sciencies
publisher.none.fl_str_mv EDP Sciencies
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869416191752142848
score 15,301603

Registos relacionados