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dc.contributor.author
Medina, Maria Clementina
dc.contributor.author
H.E.S.S. Collaboration
dc.date.available
2016-03-04T20:15:56Z
dc.date.issued
2013-02
dc.identifier.citation
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
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/4638
dc.description.abstract
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
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
dc.rights
info:eu-repo/semantics/openAccess
dc.rights
Atribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5 AR)
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Bl Lacertae Objects
dc.subject
Gamma-Rays
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Galaxies
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Cosmic Background Radiation
dc.subject.classification
Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
550
dc.journal.number
a4
dc.journal.pagination
4-15
dc.journal.pais
Francia
dc.journal.ciudad
Paris
dc.description.fil
Fil: Medina, Maria Clementina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto Argentino de Radioastronomia (i); Argentina
dc.description.fil
Fil: H.E.S.S. Collaboration.
dc.journal.title
Astronomy and Astrophysics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/arxiv/http://arxiv.org/abs/1212.3409
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/201220355
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.aanda.org/articles/aa/abs/2013/02/aa20355-12/aa20355-12.html
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/issn/0004-6361
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