Magnetar SGR 1900+14 as a Potential Source of Galactic Cosmic Rays with Energies Above 1020 eV

Abstract

The analysis of the influence of the Galactic magnetic field on the trajectory of cosmic rays of extremely high energies (EHECR, E > 10²⁰ eV) detected by Auger and Telescope Array (TA) detectors shows that the magnetar SGR 1900+14 is a potential Galactic source of the EHECR triplet – three events in a circle of radius 2° in the vicinity of the Galactic Center (l = 35°, b = –4°). Magnetar SGR 1900+14 – a neutron star with magnetic field of the order of 10¹⁵ G – was formed as a result of the Supernova outburst 1000…6000 years ago. In our work we investigate possible manifestations of cosmic rays accelerated by the Supernova remnant’s shock, due to their interaction with the molecular clouds of the interstellar medium in the vicinity of Supernova. In particular, the possibility of such a gamma-ray emission model of the newly discovered unidentified TeV gamma-ray source 2HWC J1907+084 is analyzed.