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dc.contributor.author
Acero, F.
dc.contributor.author
Aharonian, F.
dc.contributor.author
Akhperjanian, A. G.
dc.contributor.author
Anton, G.
dc.contributor.author
Abramowski, A.
dc.contributor.author
Medina, Maria Clementina
dc.contributor.author
Tavernet, J.P.
dc.contributor.author
Terrier, R.
dc.contributor.author
Tluczykont, M.
dc.contributor.author
Trichar, C.
dc.contributor.author
Valerius, K.
dc.contributor.author
van Eldik, C.
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Vasileiadis, G.
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Venter, C.
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Viana, A.
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Vincent, P.
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Völk, H. J.
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Volpe, F.
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Vorobiov, S.
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Vorster, M.
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Wagner, S. J.
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Ward, M.
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White, R.
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Wierzcholska, A.
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Wouters, D.
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Zacharias, M.
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Zajczyk, A.
dc.contributor.author
Zdziarski, A. A.
dc.contributor.author
Zech, A.
dc.contributor.author
Zechlin, H. S.
dc.date.available
2017-06-30T18:40:02Z
dc.date.issued
2013-06
dc.identifier.citation
Acero, F.; Aharonian, F.; Akhperjanian, A. G.; Anton, G.; Abramowski, A.; et al.; H.E.S.S. discovery of VHE γ-rays from the quasar PKS 1510-089; Edp Sciences S A; Astronomy And Astrophysics; 554; 6-2013; 107-114
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/19300
dc.description.abstract
The quasar PKS 1510−089 (z = 0.361) was observed with the H.E.S.S. array of imaging atmospheric Cherenkov telescopes during high states in the optical and GeV bands, to search for very high energy (VHE, defined as E ≥ 0.1 TeV) emission. VHE γ-rays were detected with a statistical significance of 9.2 standard deviations in 15.8 h of H.E.S.S. data taken during March and April 2009. A VHE integral flux of I(0.15 TeV < E < 1.0 TeV) = (1.0 ± 0.2stat ± 0.2sys) × 10−11 cm−2 s−1 is measured. The best-fit power law to the VHE data has a photon index of Γ = 5.4 ± 0.7stat ± 0.3sys. The GeV and optical light curves show pronounced variability during the period of H.E.S.S. observations. However, there is insufficient evidence to claim statistically significant variability in the VHE data. Because of its relatively high redshift, the VHE flux from PKS 1510−089 should suffer considerable attenuation in the intergalactic space due to the extragalactic background light (EBL). Hence, the measured γ-ray spectrum is used to derive upper limits on the opacity due to EBL, which are found to be comparable with the previously derived limits from relatively-nearby BL Lac objects. Unlike typical VHE-detected blazars where the broadband spectrum is dominated by nonthermal radiation at all wavelengths, the quasar PKS 1510−089 has a bright thermal component in the optical to UV frequency band. Among all VHE detected blazars, PKS 1510−089 has the most luminous broad line region. The detection of VHE emission from this quasar indicates a low level of γ − γ absorption on the internal optical to UV photon field.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Edp Sciences S A
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Gamma Ray Galaxies
dc.subject
Quasars
dc.subject
Infrared Diffuse Background
dc.subject
Pks 1510 (Cuásar)
dc.subject.classification
Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
H.E.S.S. discovery of VHE γ-rays from the quasar PKS 1510-089
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2015-05-29T16:32:39Z
dc.journal.volume
554
dc.journal.pagination
107-114
dc.journal.pais
Francia
dc.journal.ciudad
Paris
dc.description.fil
Fil: Acero, F.. Universite Montpellier II; Francia
dc.description.fil
Fil: Aharonian, F.. Max Planck Institut für Kernphysik; Alemania
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Fil: Akhperjanian, A. G.. Yerevan Physics Institute; Armenia
dc.description.fil
Fil: Anton, G.. Universität Erlangen Nürnberg; Alemania
dc.description.fil
Fil: Abramowski, A.. Universität Hamburg; Alemania
dc.description.fil
Fil: Medina, Maria Clementina. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomia; Argentina
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Fil: Tavernet, J.P.. University of Adelaide; Australia
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Fil: Terrier, R.. Université Paris Diderot - Paris 7; Francia
dc.description.fil
Fil: Tluczykont, M.. Universitat Hamburg; Alemania
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Fil: Trichar, C.. Université de Savoie; Francia
dc.description.fil
Fil: Valerius, K.. Universität Erlangen Nürnberg; Alemania
dc.description.fil
Fil: van Eldik, C.. Max Planck Institut für Kernphysik; Alemania
dc.description.fil
Fil: Vasileiadis, G.. Universite Montpellier II; Francia
dc.description.fil
Fil: Venter, C.. North West University; Sudáfrica
dc.description.fil
Fil: Viana, A.. Max Planck Institut für Kernphysik; Alemania
dc.description.fil
Fil: Vincent, P.. University of Adelaide; Australia
dc.description.fil
Fil: Völk, H. J.. Max Planck Institut für Kernphysik; Alemania
dc.description.fil
Fil: Volpe, F.. Max Planck Institut für Kernphysik; Alemania
dc.description.fil
Fil: Vorobiov, S.. Universite Montpellier II; Francia
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Fil: Vorster, M.. North West University; Sudáfrica
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Fil: Wagner, S. J.. Universität Heidelberg; Alemania
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Fil: Ward, M.. University Of Durham; Reino Unido
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Fil: White, R.. University of Leicester; Reino Unido
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Fil: Wierzcholska, A.. Uniwersytet Jagiellonski; Polonia
dc.description.fil
Fil: Wouters, D.. CEA Saclay; Francia
dc.description.fil
Fil: Zacharias, M.. Ruhr-universität Bochum; Alemania
dc.description.fil
Fil: Zajczyk, A.. Universite Montpellier II; Francia
dc.description.fil
Fil: Zdziarski, A. A.. Nicolaus Copernicus Astronomical Center; Polonia
dc.description.fil
Fil: Zech, A.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
dc.description.fil
Fil: Zechlin, H. S.. Universitat Hamburg; Alemania
dc.journal.title
Astronomy And Astrophysics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://adsabs.harvard.edu/abs/2013A%26A...554A.107H
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2013/06/aa21135-13/aa21135-13.html
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/201321135
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