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Spectrum Composition of Galactic Center X-ray Emission with Point and Diffuse X-ray Sources
Masayoshi Nobukawa, Katsuji Koyama
This paper reports that the X-ray spectrum from the Galactic Center X-ray Emission (GCXE) is expressed by the assembly of active binaries, non-magnetic Cataclysmic Variables, magne…
A systematic comparison of ionization temperatures between ionizing and recombining plasmas in supernova remnants
Shigeo Yamauchi, Masayoshi Nobukawa, Katsuji Koyama
The temperatures of the plasma in the supernova remnants (SNRs) are initially very low just after the shock heating. The electron temperature (kT_{e}) increases quickly by Coulomb…
X-ray spectra of Sgr A East and diffuse X-ray background near the Galactic center
Akiko Ono, Hideki Uchiyama, Shigeo Yamauchi +3
This paper reports the analysis procedure and results of simultaneous spectral fits of the Suzaku archive data for Sagittarius (Sgr) A East and the nearby Galactic center X-ray emi…
New Scenario of plasma evolution in IC 443
Arisa Hirayama, Shigeo Yamauchi, Kumiko K. Nobukawa +2
Most of young and middle-aged supernova remnants (SNRs) exhibit an ionizing plasma (IP), an ionizing process following a shock heated SNR gas. On the other hand, significant fracti…
Detection of polarized gamma-ray emission from the Crab nebula with Hitomi Soft Gamma-ray Detector
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +191
We present the results from the Hitomi Soft Gamma-ray Detector (SGD) observation of the Crab nebula. The main part of SGD is a Compton camera, which in addition to being a spectrom…
Origin of the low-temperature plasma in the Galactic center X-ray emission
Shigeo Yamauchi, Miku Shimizu, Masayoshi Nobukawa +3
The Galactic Center X-ray Emission (GCXE) is composed of high temperature (7 keV) and low temperature (1 keV) plasmas (HTP and LTP, respectively). The global structure of the HTP i…