500 citations · 7.6k across the 176 of their papers we have counts for
176 papers
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…
Comment on "An X-ray chimney extending hundreds of parsecs above and below the Galactic Centre" (2019, Nature, 567, 34)
Shinya Nakashima, Katsuji Koyama, Q. Daniel Wang
A recent article "An X-ray chimney extending hundreds of parsecs above and below the Galactic Centre" (2019, Nature, 567, 34) reported the detection of chimney-like X-ray-emitting…
X-ray Observation of a Magnetized Hot Gas Outflow in the Galactic Center Region
Shinya Nakashima, Katsuji Koyama, Q. Daniel Wang +1
We report the discovery of a scale X-ray plume in the northern Galactic Center (GC) region observed with Suzaku. The plume is located at (, ) ($0\mbox{$.\!\!…
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…