Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.

Autores
Medina, Maria Clementina; H.E.S.S. Collaboration
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The extragalactic background light (EBL) is the diffuse radiation with the second highest energy density in the Universe after the cosmic microwave background. The aim of this study is the measurement of the imprint of the EBL opacity to gamma-rays on the spectra of the brightest extragalactic sources detected with the High Energy Stereoscopic System (H.E.S.S.). The originality of the method lies in the joint fit of the EBL optical depth and of the intrinsic spectra of the sources, assuming intrinsic smoothness. Analysis of a total of [aprox]105gamma-ray events enables the detection of an EBL signature at the 8.8sigma level and constitutes the first measurement of the EBL optical depth using very-high energy (E > 100 GeV) gamma-rays. The EBL flux density is constrained over almost two decades of wavelengths [0.30 mum, 17 mum] and the peak value at 1.4 mum is derived as lambdaFlambda = 15 ± 2stat ± 3sys nW m-2 sr-1. Appendix A is available in electronic form at http://www.aanda.org
Fil: Medina, Maria Clementina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto Argentino de Radioastronomia (i); Argentina
Fil: H.E.S.S. Collaboration.
Materia
BL Lacertae objects
Gamma-rays
Galaxies
Cosmic background radiation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
Atribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5 AR)
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/4638
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/4638
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.Medina, Maria ClementinaH.E.S.S. CollaborationBL Lacertae objectsGamma-raysGalaxiesCosmic background radiationhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The extragalactic background light (EBL) is the diffuse radiation with the second highest energy density in the Universe after the cosmic microwave background. The aim of this study is the measurement of the imprint of the EBL opacity to gamma-rays on the spectra of the brightest extragalactic sources detected with the High Energy Stereoscopic System (H.E.S.S.). The originality of the method lies in the joint fit of the EBL optical depth and of the intrinsic spectra of the sources, assuming intrinsic smoothness. Analysis of a total of [aprox]105gamma-ray events enables the detection of an EBL signature at the 8.8sigma level and constitutes the first measurement of the EBL optical depth using very-high energy (E > 100 GeV) gamma-rays. The EBL flux density is constrained over almost two decades of wavelengths [0.30 mum, 17 mum] and the peak value at 1.4 mum is derived as lambdaFlambda = 15 ± 2stat ± 3sys nW m-2 sr-1. Appendix A is available in electronic form at http://www.aanda.orgFil: Medina, Maria Clementina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto Argentino de Radioastronomia (i); ArgentinaFil: H.E.S.S. Collaboration.EDP Sciences2013-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/4638Medina, Maria Clementina; H.E.S.S. Collaboration; Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.; EDP Sciences; Astronomy and Astrophysics; 550; a4; 2-2013; 4-150004-6361enginfo:eu-repo/semantics/altIdentifier/arxiv/http://arxiv.org/abs/1212.3409info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201220355info:eu-repo/semantics/altIdentifier/url/http://www.aanda.org/articles/aa/abs/2013/02/aa20355-12/aa20355-12.htmlinfo:eu-repo/semantics/altIdentifier/issn/0004-6361info:eu-repo/semantics/openAccessAtribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5 AR)https://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:13:17Zoai:ri.conicet.gov.ar:11336/4638instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:13:17.599CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.
title Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.
spellingShingle Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.
Medina, Maria Clementina
BL Lacertae objects
Gamma-rays
Galaxies
Cosmic background radiation
title_short Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.
title_full Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.
title_fullStr Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.
title_full_unstemmed Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.
title_sort Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.
dc.creator.none.fl_str_mv Medina, Maria Clementina
H.E.S.S. Collaboration
author Medina, Maria Clementina
author_facet Medina, Maria Clementina
H.E.S.S. Collaboration
author_role author
author2 H.E.S.S. Collaboration
author2_role author
dc.subject.none.fl_str_mv BL Lacertae objects
Gamma-rays
Galaxies
Cosmic background radiation
topic BL Lacertae objects
Gamma-rays
Galaxies
Cosmic background radiation
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The extragalactic background light (EBL) is the diffuse radiation with the second highest energy density in the Universe after the cosmic microwave background. The aim of this study is the measurement of the imprint of the EBL opacity to gamma-rays on the spectra of the brightest extragalactic sources detected with the High Energy Stereoscopic System (H.E.S.S.). The originality of the method lies in the joint fit of the EBL optical depth and of the intrinsic spectra of the sources, assuming intrinsic smoothness. Analysis of a total of [aprox]105gamma-ray events enables the detection of an EBL signature at the 8.8sigma level and constitutes the first measurement of the EBL optical depth using very-high energy (E > 100 GeV) gamma-rays. The EBL flux density is constrained over almost two decades of wavelengths [0.30 mum, 17 mum] and the peak value at 1.4 mum is derived as lambdaFlambda = 15 ± 2stat ± 3sys nW m-2 sr-1. Appendix A is available in electronic form at http://www.aanda.org
Fil: Medina, Maria Clementina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto Argentino de Radioastronomia (i); Argentina
Fil: H.E.S.S. Collaboration.
description The extragalactic background light (EBL) is the diffuse radiation with the second highest energy density in the Universe after the cosmic microwave background. The aim of this study is the measurement of the imprint of the EBL opacity to gamma-rays on the spectra of the brightest extragalactic sources detected with the High Energy Stereoscopic System (H.E.S.S.). The originality of the method lies in the joint fit of the EBL optical depth and of the intrinsic spectra of the sources, assuming intrinsic smoothness. Analysis of a total of [aprox]105gamma-ray events enables the detection of an EBL signature at the 8.8sigma level and constitutes the first measurement of the EBL optical depth using very-high energy (E > 100 GeV) gamma-rays. The EBL flux density is constrained over almost two decades of wavelengths [0.30 mum, 17 mum] and the peak value at 1.4 mum is derived as lambdaFlambda = 15 ± 2stat ± 3sys nW m-2 sr-1. Appendix A is available in electronic form at http://www.aanda.org
publishDate 2013
dc.date.none.fl_str_mv 2013-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/4638
Medina, Maria Clementina; H.E.S.S. Collaboration; Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.; EDP Sciences; Astronomy and Astrophysics; 550; a4; 2-2013; 4-15
0004-6361
url http://hdl.handle.net/11336/4638
identifier_str_mv Medina, Maria Clementina; H.E.S.S. Collaboration; Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.; EDP Sciences; Astronomy and Astrophysics; 550; a4; 2-2013; 4-15
0004-6361
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/arxiv/http://arxiv.org/abs/1212.3409
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201220355
info:eu-repo/semantics/altIdentifier/url/http://www.aanda.org/articles/aa/abs/2013/02/aa20355-12/aa20355-12.html
info:eu-repo/semantics/altIdentifier/issn/0004-6361
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
Atribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5 AR)
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv Atribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5 AR)
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846781538772975616
score 12.982451

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