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arXiv · 1002.4523

Have Cherenkov telescopes detected a new light boson?

Marco Roncadelli·Alessandro De Angelis·Oriana Mansutti
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Abstract

Recent observations by H.E.S.S. and MAGIC strongly suggest 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 that photon oscillations into a very light Axion-Like Particle occur in extragalactic magnetic fields. A quantitative estimate of this effect indeed explains the observed data and in particular the spectrum of blazar 3C279.

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Marco Roncadelli, Alessandro De Angelis, Oriana Mansutti. 2010-02-24. Have Cherenkov telescopes detected a new light boson?. https://doi.org/10.1088/1742-6596/203/1/012120

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