"The ASTRI Mini-Array: a breakthrough in the Cosmic Ray study"
M. Cardillo* on behalf of the ASTRI Collaboration
July 28, 2021
March 18, 2022
Despite the enormous efforts done in very recent years, both theoretically and experimentally, thebasic three questions about the CR origin remain without clear answers: what are their sources,how are they accelerated, how do they propagate? Gamma-ray astronomy plays a fundamentalrole in this field. Both relativistic protons and electrons can emit in the gamma-ray band withdifferent processes but only the detection of hadronic gamma-ray emission is a direct proof ofCosmic-Ray acceleration. Distinguishing leptonic and hadronic components is one of the mosttricky issues in the high energy astrophysics, however, a gamma-ray detection at about 100 TeVwould be a direct proof of the hadronic origin of the emission. Consequently, not only it woulddirectly confirm the presence of CR acceleration in a source but also it gives us a large amountof information about their sources, their parent protons and their propagation.The ASTRI Mini-Array, with its unprecedented sensitivity and angular resolution at E>10 TeV, will provide afundamental contribution to close some of the most important CR open issues.
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