On the search for Galactic supernova remnant PeVatrons with current TeV instruments

Abstract

The supernova remnant hypothesis for the origin of Galactic cosmic rays has passed several tests, but the firm identification of a supernova remnant pevatron, considered to be a decisive step to prove the hypothesis, is still missing. While a lot of hope has been placed in next-generation instruments operating in the multi-TeV range, it is possible that current gamma-ray instruments, operating in the TeV range, could pinpoint these objects or, most likely, identify a number of promising targets for instruments of next generation. Starting from the assumption that supernova remnants are indeed the sources of Galactic cosmic rays, and therefore must be pevatrons for some fraction of their lifetime, we investigate the ability of current instruments to detect such objects, or to identify the most promising candidates.

8 pages, 8 figures

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Cited by in corpus (11)

• The origin of Galactic cosmic rays: challenges to the standard paradigm
• The low rate of Galactic pevatrons
• The Hunt for Pevatrons: The Case of Supernova Remnants
• Where are Milky Way's Hadronic PeVatrons?
• Sensitivity of the Cherenkov Telescope Array to spectral signatures of hadronic PeVatrons with application to Galactic Supernova Remnants
• Gamma rays from reaccelerated particles at supernova remnant shocks
• Searches for Neutrinos from LHAASO ultra-high-energy γ-ray sources using the IceCube Neutrino Observatory
• A possible evidence of the gluon condensation effect in cosmic positron and gamma-ray spectra
• The Southern Wide-Field Gamma-ray Observatory (SWGO)
• Testing the Molecular Cloud Paradigm for Ultra-High-Energy Gamma Ray Emission from the Direction of SNR G106.3+2.7
• Unveiling the nature of the unidentified gamma-ray sources 4FGL J1908.6+0915e, HESS J1907+089/HOTS J1907+091, and 3HWC J1907+085 in the sky region of the magnetar SGR 1900+14