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- Abramowski, A. (author)
Discovery of very high energy gamma-ray emission from the BL Lacertae object PKS0301-243 with HESS
- Article/chapterEnglish2013
Publisher, publication year, extent ...
- 2013-11-27
- EDP Sciences,2013
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:su-100639
- https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-100639URI
- https://doi.org/10.1051/0004-6361/201321639DOI
- https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-33167URI
Supplementary language notes
- Language:English
- Summary in:English
Part of subdatabase
- SwePubSwePub
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Notes
- AuthorCount:213;
- The active galactic nucleus PKS 0301-243 (z = 0.266) is a high-synchrotron-peaked BL Lac object that is detected at high energies (HE, 100 MeV < E < 100 GeV) by Fermi/LAT. This paper reports on the discovery of PKS 0301-243 at very high energies (E > 100 GeV) by the High Energy Stereoscopic System (H.E.S.S.) from observations between September 2009 and December 2011 for a total live time of 34.9 h. Gamma rays above 200 GeV are detected at a significance of 9.4 sigma. A hint of variability at the 2.5 sigma level is found. An integral flux I(E > 200GeV) = (3.3 +/- 1.1(stat) +/- 0.7(syst)) x 10(-12) ph cm(-2) s(-1) and a photon index Gamma = 4.6 +/- 0.7(stat) +/- 0.2(syst) are measured. Multi-wavelength light curves in HE, X-ray and optical bands show strong variability, and a minimal variability timescale of eight days is estimated from the optical light curve. A single-zone leptonic synchrotron self-Compton scenario satisfactorily reproduces the multi-wavelength data. In this model, the emitting region is out of equipartition and the jet is particle dominated. Because of its high redshift compared to other sources observed at TeV energies, the very high energy emission from PKS 0301-243 is attenuated by the extragalactic background light (EBL) and the measured spectrum is used to derive an upper limit on the opacity of the EBL.
Subject headings and genre
- NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
- NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
- galaxies: active
- BL Lacertae objects: general
- BL Lacertae objects: individual: PKS 0301-243
- gamma rays: galaxies
- radiation mechanisms: non-thermal
- Astropartikelfysik
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- Acero, F. (author)
- Aharonian, F. (author)
- Benkhali, F. Ait (author)
- Akhperjanian, A. G. (author)
- Anguener, E. (author)
- Anton, G. (author)
- Balenderan, S. (author)
- Balzer, A. (author)
- Barnacka, A. (author)
- Becherini, Yvonne (author)
- Tjus, J. Becker (author)
- Bernloehr, K. (author)
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- Boettcher, M. (author)
- Boisson, C. (author)
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- Brun, F. (author)
- Brun, P. (author)
- Bulik, T. (author)
- Carrigan, S. (author)
- Casanova, S. (author)
- Cerruti, M. (author)
- Punch, MichaelUniv Paris Diderot, APC, AstroParticule & Cosmology, CNRS,IN2P3,CEA,Irfu, Observ Paris,Sorbonne Paris C, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France(Swepub:lnu)mipuaa (author)
- Chalme-Calvet, R. (author)
- Chaves, R. C. G. (author)
- Cheesebrough, A. (author)
- Chretien, M. (author)
- Colafrancesco, S. (author)
- Cologna, G. (author)
- Conrad, JanStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)conrad (author)
- Couturier, C. (author)
- Dalton, M. (author)
- Daniel, M. K. (author)
- Davids, I. D. (author)
- Degrange, B. (author)
- Deil, C. (author)
- deWilt, P. (author)
- Dickinson, Hugh J.Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)hdick (author)
- Djannati-Atai, A. (author)
- Domainko, W. (author)
- Drury, L. O 'C. (author)
- Dubus, G. (author)
- Dutson, K. (author)
- Dyks, J. (author)
- Dyrda, M. (author)
- Edwards, T. (author)
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- Eger, P. (author)
- Espigat, P. (author)
- Farnier, ChristianStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)cfarn (author)
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- Fontaine, G. (author)
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- Giebels, B. (author)
- Glicenstein, J. F. (author)
- Grondin, M. -H (author)
- Grudzinska, M. (author)
- Haeffner, S. (author)
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- Harris, J. (author)
- Heinzelmann, G. (author)
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- Hermann, G. (author)
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- Hofverberg, P. (author)
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- Horns, D. (author)
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- Jahn, C. (author)
- Jamrozy, M. (author)
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- Jung, I. (author)
- Kastendieck, M. A. (author)
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- Klochkov, D. (author)
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- Kolitzus, D. (author)
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- Lemoine-Goumard, M. (author)
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- Lopatin, A. (author)
- Lu, C. -C (author)
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- Marx, R. (author)
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- Mayer, M. (author)
- McComb, T. J. L. (author)
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- Mehault, J. (author)
- Menzler, U. (author)
- Meyer, M. (author)
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- Moulin, E. (author)
- Murach, T. (author)
- Naumann, C. L. (author)
- de Naurois, M. (author)
- Nedbal, D. (author)
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- Univ Paris Diderot, APC, AstroParticule & Cosmology, CNRS,IN2P3,CEA,Irfu, Observ Paris,Sorbonne Paris C, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, FranceFysikum (creator_code:org_t)
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