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astro-ph.HE2024
Overionized plasma in the supernova remnant Sagittarius A East anchored by XRISM observations
XRISM Collaboration
Sagittarius A East is a supernova remnant with a unique surrounding environment, as it is located in the immediate vicinity of the supermassive black hole at the Galactic center, S…
astro-ph.HE2024
Is the low-energy tail of shock-accelerated protons responsible for over-ionized plasma in supernova remnants?
Makoto Sawada, Liyi Gu, Ryo Yamazaki
Over-ionized, recombining plasma is an emerging class of X-ray bright supernova remnants (SNRs). This unique thermal state where the ionization temperature () is signifi…