Suzaku Observations of Local Ultraluminous Infrared Galaxies (2008)
Teng, Stacy H., Veilleux, Sylvain, Anabuki, Naohisa, Dermer, Charles D., Gallo, Luigi C., Nakagawa, Takao, ...
We report the results from our analysis of {\it Suzaku} XIS (0.5-10 keV) and HXD/PIN (15-40 keV) observations of five well-known local ULIRGs: {\em IRAS} F05189-2524, {\em IRAS} F08572+3915, Mrk 273,...
Reeves, James, Done, Chris, Pounds, Ken, Terashima, Yuichi, Hayashida, Kiyoshi, Anabuki, Naohisa
We present a comparison between the 2001 XMM-Newton and 2005 Suzaku observations of the quasar, PG1211+143 at z=0.0809. Variability is observed in the 7 keV iron K-shell absorption line (at 7.6 keV...
Type I Ultraluminous Infrared Galaxies: Transition Stage from ULIRGs to QSOs (2007)
Kawakatu, Nozomu, Anabuki, Naohisa, Nagao, Tohru, Umemura, Masayuki, Nakagawa, Takao
We examine whether the ultraluminous infrared galaxies that contain a type I Seyfert nucleus (a type I ULIRG) are in the transition stage from ULIRGs to quasi-stellar objects (QSOs). To inspect this...
Suzaku wide-band X-ray Spectroscopy of the Seyfert 2 AGN in NGC 4945 (2007)
Itoh, Takeshi, Done, Chris, Makishima, Kazuo, Madejski, Grzegorz, Awaki, Hisamitsu, Isobe, Naoki, ...
Suzaku observed a nearby Seyfert 2 galaxy NGC4945, which hosts one of the brightest active galactic nuclei above 20 keV. Combining data from the X-ray CCD camera (XIS) and the Hard X-ray Detector...
Wide-band spectroscopy of the Compton thick Seyfert 2 galaxy Mrk 3 with Suzaku (2007)
Awaki, Hisamitsu, Anabuki, Naohisa, Fukazawa, Yasuchi, Gallo, Luigi, Ikeda, Shinya, Isobe, Naoki, ...
We obtained a wide-band spectrum of the Compton-thick Seyfert 2 galaxy Mrk 3 with Suzaku. The observed spectrum was clearly resolved into weak, soft power-law emission, a heavily absorbed power-law...
Miniutti, Giovanni, Fabian, Andrew C., Anabuki, Naohisa, Crummy, Jamie, Fukazawa, Yasushi, Gallo, Luigi, ...
The X-ray observatory Suzaku (2007)
Mitsuda, Kazuhisa, Bautz, Mark, Inoue, Hajime, Kelley, Richard L., Koyama, Katsuji, Kunieda, Hideyo, ...
Suzaku observation of 1H0707-495: puzzling spectral drop around 7 keV (2007)
Hayashida, Kiyoshi, Anabuki, Naohisa, Gallo, Luigi, Iwasawa, Kazushi, Tanaka, Yasuo, Miniutti, Giovanni, ...
The long Suzaku observation of MCG-6-30-15 (2007)
Miniutti, Giovanni, Fabian, Andrew C., Crummy, Jamie, Larsson, Josefin, Anabuki, Naohisa, Fukazawa, Yasushi, ...
Miniutti, Giovanni, Fabian, Andrew C., Anabuki, Naohisa, Crummy, Jamie, Fukazawa, Yasushi, Gallo, Luigi, ...
Suzaku has, for the first time, enabled the hard X-ray variability of the Seyfert 1 galaxy MCG-6-30-15 to be measured. The variability in the 14-45 keV band, which is dominated by a strong reflection...
Type I ULIRGs: Transition Stage from ULIRGs to QSOs (2005)
Kawakatu, Nozomu, Anabuki, Naohisa, Nagao, Tohru, Umemura, Masayuki, Nakagawa, Takao
We examine whether the ultraluminous infrared galaxies that contain a type I Seyfert nucleus (a type I ULIRG) are in the transition stage from ULIRGs to quasi-stellar objects (QSOs). To inspect this...
X-ray Evidence for a Buried Active Galactic Nucleus in UGC 5101 (2003)
Imanishi, Masatoshi, Terashima, Yuichi, Anabuki, Naohisa, Nakagawa, Takao
We present X-ray observations of the ultraluminous infrared galaxy, UGC 5101, thought to contain a buried active galactic nucleus (AGN) based on observations in other wavebands. We detected an...
The Electron Scattering Region in Seyfert Nuclei (1999)
Taniguchi, Yoshiaki, Anabuki, Naohisa
The electron scattering region (ESR) is one of important ingredients in Seyfert nuclei because it makes possible to observe the hidden broad line region (hereafter HBLR) in some type 2 Seyfert nuclei...