Search Publications
Soft and Hard X-Ray Emissions from the Anomalous X-Ray Pulsar 4U 0142+61 Observed with Suzaku
Enoto, Teruaki; Kokubun, Motohide; Makishima, Kazuo +4 more
The anomalous X-ray pulsar 4U 0142
Discovery of Gas Bulk Motion in the Galaxy Cluster Abell 2256 with Suzaku
Hayashida, Kiyoshi; Nagai, Masaaki; Tamura, Takayuki +1 more
The results from Suzaku observations of the galaxy cluster Abell 2256 are presented. This cluster is a prototypical and well-studied merging system, exhibiting substructures both in the X-ray surface brightness and in the radial velocity distribution of member galaxies. There are main and sub components separated by 3
Suzaku Metal Abundance Patterns in the Outflow Region of M 82 and the Importance of Charge Exchange
Gandhi, Poshak; Matsushita, Kyoko; Tamagawa, Toru +2 more
We performed spectral analysis of Suzaku data of the galactic disk and outflow regions of the starburst galaxy M 82. Thermal modeling of the central disk regions requires at least three temperature components. The Ly
Spectral Cross-Calibration of the Konus-Wind, the Suzaku/WAM, and the Swift/BAT Data Using Gamma-Ray Bursts
Yamaoka, Kazutaka; Ohno, Masanori; Onda, Kaori +20 more
We report on the spectral cross-calibration results of the Konus-Wind, the Suzaku/WAM, and the Swift/BAT instruments using simultaneously observed gamma-ray bursts (GRBs). This is the first attempt to use simultaneously observed GRBs as a spectral calibration source to understand systematic problems among the instruments. Based on these joint spec…
Suzaku View of the Supernova Remnant RCW 86: X-Ray Studies of Newly-Discovered Fe-Rich Ejecta
Yamaguchi, Hiroya; Koyama, Katsuji; Uchida, Hiroyuki
We report on results of imaging and spectral analysis of the supernova remnant (SNR) RCW 86 observed with Suzaku. The SNR is known to exhibit K-shell emission of low ionized Fe, possibly originating from supernova ejecta. We revealed the global distribution of the Fe-rich plasma in the entire remnant, for the first time; the Fe-K emission was clea…
Cross Spectral Calibration of Suzaku, XMM-Newton, and Chandra with PKS 2155304 as an Activity of IACHEC
Ishida, Manabu; Tsujimoto, Masahiro; Guainazzi, Matteo +6 more
We report on comparisons of the energy responses of the Suzaku XIS, the Chandra HRC and ACIS with the LETG, and the XMM-Newton MOS and pn using simultaneous data of the BL Lac object PKS 2155
Global Distribution of Fe Kα Lines in the Galactic Center Region Observed with the Suzaku Satellite
Koyama, Katsuji; Matsumoto, Hironori; Nobukawa, Masayoshi +2 more
We surveyed spatial profiles of the Fe K
Suzaku Discovery of a Hard Component Varying Independently of the Power-Law Emission in MCG -6-30-15
Makishima, Kazuo; Nakazawa, Kazuhiro; Yamada, Shin'ya +2 more
Focusing on hard X-ray variability, we reanalyzed Suzaku data of the Type I Seyfert galaxy MCG -6-30-15 obtained in 2006. Intensity-sorted spectroscopy and a principal-component analysis consistently revealed a very hard component that varies independently of the dominant power-law emission. Although the exact nature of this hard component has not…
Enhancement of Terrestrial Diffuse X-Ray Emission Associated with Coronal Mass Ejection and Geomagnetic Storm
Miyoshi, Yoshizumi; Ezoe, Yuichiro; Ohashi, Takaya +4 more
We present an analysis of a Suzaku observations taken during the geomagnetic storm of 2005 August 23-24. We found a time variation of diffuse soft X-ray emission when a coronal mass ejection hit Earth and caused a geomagnetic storm. The diffuse emission consisted of fluorescent scattering of solar X-rays and an exospheric solar wind charge exchang…
Suzaku Observation of the Intermediate Polar V1223 Sagittarii
Ishida, Manabu; Hayashi, Takayuki; Terada, Yukikatsu +2 more
We report on the Suzaku observation of the intermediate polar V1223 Sagittarii. Using a multi-temperature plasma emission model with its reflection from a cold matter, we obtained the shock temperature to be 37.9