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Paper: X-ray Emission From the Mixed-morphology Supernova Remnant HB9
Volume: 528, New Horizons in Galactic Center Astronomy and Beyond
Page: 447
Authors: Saito, M.; Yamauchi, S.; Nobukawa, K. K.; Bamba, A.; Pannuti, T.
Abstract: HB9 (G168.0+2.6) is a mixed morphology SNR. Ginga observation of HB9 found hard X-ray emission above 1.5 keV. Although it is suggested that its origin is Radio Galaxy 4C + 46.09, intra cluster gas, or X-ray emitting plasma associated with HB9, it is not concluded. Using data obtained with Suzaku, we conducted a detail spectral study of the central region of HB9. HB9 has almost no hard X-ray emission above 2 keV. In order to investigate the ionization state of plasma associated with HB9, we fitted the spectra with a plasma model and conclude that plasma is the non-equilibrium ionization state with a thermal temperature of ∼0.7 keV. In this paper, we report the results and discuss type of explosion based on the abundance ratio.
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