Contribution to a conference proceedings/Internal Report

PUBDB-2016-01770

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Detection of distant AGN by MAGIC: the transparency of the Universe to high-energy photons

Roncadelli, M. ; De Angelis, A. ; Mansutti, O.

2009
Deutsches Elektronen-Synchrotron, DESY Hamburg

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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2008-02/roncadelli_marco

Report No.: arXiv:0911.1056

Abstract: The recent detection of blazar 3C279 by MAGIC has confirmed previous indications by H.E.S.S. that the Universe is more transparent to very-high-energy gamma rays than previously thought. We show that this fact can be reconciled with standard blazar emission models provided photon oscillations into a veri light Axion-Like Particle occur in extragalactic magnetic fields. A quantitative estimate of this effect explains the observed spectrum of 3C279. Our prediction can be tested in the near future by the satellite-borne GLAST detector as well as by the ground-based Imaging Atmospheric Cherenkov Telescpoes H.E.S.S., MAGIC, CANGAROO III, VERITAS and by the Extensive Air Shower arrays ARGO-YBJ and MILAGRO.

Keyword(s): photon: oscillation ; blazar: emission ; emission: model ; gamma ray: VHE ; showers: air ; magnetic field ; transparency ; Cherenkov ; VERITAS ; GLAST ; axion ; WIMP ; AGN

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Contributing Institute(s):

1. Bibliothek und Dokumentation (L)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

Experiment(s):

1. Facility (machine) HERA

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Proceedings/Internal Report Lindner, A. (Editor)DESY* ; Redondo, J. (Editor)DESY* ; Ringwald, A. (Editor)DESY*
Proceedings, 4th Patras Workshop on Axions, WIMPs and WISPs (AXION-WIMP 2008)
20084th Patras Workshop on Axions, WIMPs and WISPs, AXION-WIMP 2008, HamburgHamburg, Germany, 18 Jun 2008 - 21 Jun 20082008-06-182008-06-21 Verlag Deutsches Elektronen-Synchrotron (2008)2008     Files BibTeX | EndNote: XML, Text | RIS

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