Study of axion-like particles signals at Imaging Air Cherenkov Telescopes
July 22, 2019
July 02, 2021
We propose a model for the flux of very-high energy (VHE) gamma rays at Earth in the energy region from 250 GeV to 25 TeV. We take into account, along the path from the source to our Galaxy, the attenuation resulting from the photon interactions with the extragalactic background light (EBL), and the gamma-ray oscillations into axion-like particles (ALPs) due to their interactions with extragalactic magnetic field (EMF). We also discuss the expected increases in the gamma-ray flux to be observed by Imaging Air Cherenkov Telescopes (IACTs), if ALPs are confirmed by astrophysics as dark matter particles.
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