%0 Conference Paper
%A Roncadelli, Marco
%A De Angelis, Alessandro
%A Mansutti, Oriana
%T Detection of distant AGN by MAGIC: the transparency of the Universe to high-energy photons
%N arXiv:0911.1056
%C Hamburg
%I Deutsches Elektronen-Synchrotron, DESY
%M PUBDB-2016-01770
%M arXiv:0911.1056
%P 53-56
%D 2009
%X 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.
%B 4th Patras Workshop on Axions, WIMPs and WISPs
%C 18 Jun 2008 - 21 Jun 2008, Hamburg (Germany)
Y2 18 Jun 2008 - 21 Jun 2008
M2 Hamburg, Germany
%K photon: oscillation (INSPIRE)
%K blazar: emission (INSPIRE)
%K emission: model (INSPIRE)
%K gamma ray: VHE (INSPIRE)
%K showers: air (INSPIRE)
%K magnetic field (INSPIRE)
%K transparency (INSPIRE)
%K Cherenkov (INSPIRE)
%K VERITAS (INSPIRE)
%K GLAST (INSPIRE)
%K axion (INSPIRE)
%K WIMP (INSPIRE)
%K AGN (INSPIRE)
%F PUB:(DE-HGF)8 ; PUB:(DE-HGF)15
%9 Contribution to a conference proceedingsInternal Report
%U <Go to ISI:>//WOS:00
%R 10.3204/DESY-PROC-2008-02/roncadelli_marco
%U https://bib-pubdb1.desy.de/record/297017