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New insights into SNR evolution revealed by the discovery of recombining plasmas

Yamaguchi, Hiroya; Ozawa, Midori; Ohnishi, Takao

We report the discovery of recombining plasmas in three supernova remnants (SNRs) with the Suzaku X-ray astronomy satellite. During SNR's evolution, the expanding supernova ejecta and the ambient matter are compressed and heated by the reverse and forward shocks to form an X-ray emitting hot plasma. Since ionization proceeds slowly compared to sho…