Spectral energy distribution of Markarian 501: quiescent state versus extreme outburst

The very high energy (VHE; E > 100 GeV) blazar Markarian 501 (Mrk 501) has a well-studied history of extreme spectral variability and is an excellent laboratory for studying the physical processes within the jets of active galactic nuclei. However, there are few detailed multiwavelength studies o...

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Autores: Antoranz Canales, Pedro, Barrio Uña, Juan Abel, Contreras González, José Luis, Fonseca González, María Victoria, Miranda Pantoja, José Miguel, Nieto Castaño, Daniel
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/43897
Acceso en línea:https://hdl.handle.net/20.500.14352/43897
Access Level:acceso abierto
Palabra clave:537
539.1
Gamma-Ray Emission
Active Galactic Nucleo
Large-Area Telescope
Multiwavelength Observations
X-Ray
Radiation
Blazar
Performance
Evolution
Astronomy.
Electrónica (Física)
Electricidad
Física nuclear
2202.03 Electricidad
2207 Física Atómica y Nuclear
id ES_6d2b7e9f2c686cacfcb9721cbcf5c060
oai_identifier_str oai:docta.ucm.es:20.500.14352/43897
network_acronym_str ES
network_name_str España
repository_id_str
spelling Spectral energy distribution of Markarian 501: quiescent state versus extreme outburstAntoranz Canales, PedroBarrio Uña, Juan AbelContreras González, José LuisFonseca González, María VictoriaMiranda Pantoja, José MiguelNieto Castaño, Daniel537539.1Gamma-Ray EmissionActive Galactic NucleoLarge-Area TelescopeMultiwavelength ObservationsX-RayRadiationBlazarPerformanceEvolutionAstronomy.Electrónica (Física)ElectricidadFísica nuclear2202.03 Electricidad2207 Física Atómica y NuclearThe very high energy (VHE; E > 100 GeV) blazar Markarian 501 (Mrk 501) has a well-studied history of extreme spectral variability and is an excellent laboratory for studying the physical processes within the jets of active galactic nuclei. However, there are few detailed multiwavelength studies of Mrk 501 during its quiescent state, due to its low luminosity. A short-term multiwavelength study of Mrk 501 was coordinated in 2009 March, focusing around a multi-day observation with the Suzaku X-ray satellite and including gamma-ray data from VERITAS, MAGIC, and the Fermi Gamma-ray Space Telescope with the goal of providing a well-sampled multiwavelength baseline measurement of Mrk 501 in the quiescent state. The results of these quiescent-state observations are compared to the historically extreme outburst of 1997 April 16, with the goal of examining variability of the spectral energy distribution (SED) between the two states. The derived broadband SED shows the characteristic double-peaked profile. We find that the X-ray peak shifts by over two orders of magnitude in photon energy between the two flux states while the VHE peak varies little. The limited shift in the VHE peak can be explained by the transition to the Klein-Nishina (KN) regime. Synchrotron self-Compton models are matched to the data and the implied KN effects are explored.IOP PublishingUniversidad Complutense de Madrid20112011-02-0120112011-02-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/43897reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/438972026-06-02T12:44:21Z
dc.title.none.fl_str_mv Spectral energy distribution of Markarian 501: quiescent state versus extreme outburst
title Spectral energy distribution of Markarian 501: quiescent state versus extreme outburst
spellingShingle Spectral energy distribution of Markarian 501: quiescent state versus extreme outburst
Antoranz Canales, Pedro
537
539.1
Gamma-Ray Emission
Active Galactic Nucleo
Large-Area Telescope
Multiwavelength Observations
X-Ray
Radiation
Blazar
Performance
Evolution
Astronomy.
Electrónica (Física)
Electricidad
Física nuclear
2202.03 Electricidad
2207 Física Atómica y Nuclear
title_short Spectral energy distribution of Markarian 501: quiescent state versus extreme outburst
title_full Spectral energy distribution of Markarian 501: quiescent state versus extreme outburst
title_fullStr Spectral energy distribution of Markarian 501: quiescent state versus extreme outburst
title_full_unstemmed Spectral energy distribution of Markarian 501: quiescent state versus extreme outburst
title_sort Spectral energy distribution of Markarian 501: quiescent state versus extreme outburst
dc.creator.none.fl_str_mv Antoranz Canales, Pedro
Barrio Uña, Juan Abel
Contreras González, José Luis
Fonseca González, María Victoria
Miranda Pantoja, José Miguel
Nieto Castaño, Daniel
author Antoranz Canales, Pedro
author_facet Antoranz Canales, Pedro
Barrio Uña, Juan Abel
Contreras González, José Luis
Fonseca González, María Victoria
Miranda Pantoja, José Miguel
Nieto Castaño, Daniel
author_role author
author2 Barrio Uña, Juan Abel
Contreras González, José Luis
Fonseca González, María Victoria
Miranda Pantoja, José Miguel
Nieto Castaño, Daniel
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 Emission
Active Galactic Nucleo
Large-Area Telescope
Multiwavelength Observations
X-Ray
Radiation
Blazar
Performance
Evolution
Astronomy.
Electrónica (Física)
Electricidad
Física nuclear
2202.03 Electricidad
2207 Física Atómica y Nuclear
topic 537
539.1
Gamma-Ray Emission
Active Galactic Nucleo
Large-Area Telescope
Multiwavelength Observations
X-Ray
Radiation
Blazar
Performance
Evolution
Astronomy.
Electrónica (Física)
Electricidad
Física nuclear
2202.03 Electricidad
2207 Física Atómica y Nuclear
description The very high energy (VHE; E > 100 GeV) blazar Markarian 501 (Mrk 501) has a well-studied history of extreme spectral variability and is an excellent laboratory for studying the physical processes within the jets of active galactic nuclei. However, there are few detailed multiwavelength studies of Mrk 501 during its quiescent state, due to its low luminosity. A short-term multiwavelength study of Mrk 501 was coordinated in 2009 March, focusing around a multi-day observation with the Suzaku X-ray satellite and including gamma-ray data from VERITAS, MAGIC, and the Fermi Gamma-ray Space Telescope with the goal of providing a well-sampled multiwavelength baseline measurement of Mrk 501 in the quiescent state. The results of these quiescent-state observations are compared to the historically extreme outburst of 1997 April 16, with the goal of examining variability of the spectral energy distribution (SED) between the two states. The derived broadband SED shows the characteristic double-peaked profile. We find that the X-ray peak shifts by over two orders of magnitude in photon energy between the two flux states while the VHE peak varies little. The limited shift in the VHE peak can be explained by the transition to the Klein-Nishina (KN) regime. Synchrotron self-Compton models are matched to the data and the implied KN effects are explored.
publishDate 2011
dc.date.none.fl_str_mv 2011
2011-02-01
2011
2011-02-01
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/20.500.14352/43897
url https://hdl.handle.net/20.500.14352/43897
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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_ 1869410332197257216
score 15.300719

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