A new light boson from MAGIC observations?
arXiv:0911.2489 · doi:10.1016/j.nuclphysbps.2009.02.011
Abstract
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 currently thought. This circumstance can be reconciled with observations of nearby blazars provided that photon oscillations into a very light Axion-Like Particle occur in extragalactic magnetic fields. The emerging "DARMA scenario" can be tested in the near future by the satellite-borne Fermi LAT detector as well as by the ground-based Imaging Atmospheric Cherenkov Telescopes H.E.S.S., MAGIC, CANGAROO III, VERITAS and by the Extensive Air Shower arrays ARGO-YBJ and MILAGRO.
4 pages, 1 figure, Proceeding of the "Neutrino Oscillation Workshop", Conca Specchiulla, Otranto, Italy, 6-12 September 2008
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