Suzaku X-Ray Study of an Anomalous Source XSS J12270-4859 (2009)
Saitou, Kei, Tsujimoto, Masahiro, Ebisawa, Ken, Ishida, Manabu
We report the results of the Suzaku X-ray observation of XSS J12270-4859, one of the hard X-ray sources in the INTEGRAL catalogue. The object has been classified as an intermediate polar (IP) by...
Super-hard X-Ray Emission from eta Carinae Observed with Suzaku (2009)
Sekiguchi, Akiko, Tsujimoto, Masahiro, Kitamoto, Shunji, Ishida, Manabu, Hamaguchi, Kenji, Mori, Hideyuki, ...
We present the Suzaku results of eta Carinae in the 5--50 keV range conducted twice around the apastron in 2005 August for 50 ks and in 2006 February for 20 ks. The X-ray Imaging Spectrometer (XIS)...
The Suzaku Observations of SS Cygni in Quiescence and Outburst (2008)
Ishida, Manabu, Okada, Shunsaku, Hayashi, Takayuki, Nakamura, Ryoko, Terada, Yukikatsu, Mukai, Koji, ...
We present results from the Suzaku observations of the dwarf nova SS Cyg in quiescence and outburst in 2005 November. Owing to high sensitivity of the HXD PIN detector and high spectral resolution of...
The Nature of a Cosmic-Ray Accelerator, CTB37 B, Observed with Suzaku and Chandra (2008)
Nakamura, Ryoko, Bamba, Aya, Ishida, Manabu, Nakajima, Hiroshi, Yamazaki, Ryo, Terada, Yukikatsu, ...
We report on Suzaku and Chandra observations of the young supernova remnant CTB37B, from which TeV gamma-rays were detected by the H.E.S.S. Cherenkov telescope. The 80 ks Suzaku observation provided...
Chandra HETG line spectroscopy of the Non-magnetic Cataclysmic Variable SS Cyg (2008)
Okada, Shunsaku, Nakamura, Ryoko, Ishida, Manabu
We present {\it Chandra} HETG observations of SS Cygni in quiescence and outburst. The spectra are characterized by He-like and H-like Ka emission lines from O to Fe, as well as L-shell emission...
Sato, Kosuke, Matsushita, Kyoko, Ishisaki, Yoshitaka, Yamasaki, Noriko Y., Ishida, Manabu, Ohashi, Takaya
Temperature and abundance distributions of the intra-cluster medium (ICM) in the NGC 507 group of galaxies were studied with Suzaku. Observed concentric annular spectra were well-represented by a two...
Restoring the Suzaku Source Position Accuracy and Point-Spread Function (2008)
Uchiyama, Yasunobu, Maeda, Yoshitomo, Ebara, Masatoshi, Fujimoto, Ryuichi, Ishisaki, Yoshitaka, Ishida, Manabu, ...
We present an empirical correction of sky coordinates of X-ray photons obtained with the XIS aboard the Suzaku satellite to improve the source position accuracy and restore the point-spread function...
The X-ray spectrum of the intermediate polar AO Piscium (2007)
Coel Hellier, Koji Mukai, Manabu Ishida, Ryuichi Fujimoto
An ASCA observation of AO Psc shows an X-ray lightcurve dominated by a sinusoidal spin-pulse. There are absorption dips recurring with the orbital cycle, but otherwise no other periodic variations in...
Accepted for publication in ApJ The early X-ray emission from V382 Velorum (=Nova Vel 1999): (2007)
We present the results of ASCA and RXTE observations of the early X-ray emission from the classical nova V382 Velorum. Its ASCA spectrum was hard (kT10 keV) with a strong (10
Terada, Yukikatsu, Hayashi, Takayuki, Ishida, Manabu, Mukai, Koji, Dotani, Tadayas U, Okada, Shunsaku, ...
The fast rotating magnetized white dwarf, AE Aquarii, was observed with Suzaku, in October 2005 and October 2006 with exposures of 53.1 and 42.4 ks, respectively. In addition to clear spin modulation...
Sato, Kosuke, Tokoi, Kazuyo, Matsushita, Kyoko, Ishisaki, Yoshitaka, Yamasaki, Noriko Y., Ishida, Manabu, ...
We studied the properties of the intra-cluster medium (ICM) in two clusters of galaxies (AWM 7 and Abell 1060) and two groups (HCG 62 and NGC 507) with the X-ray Observatory Suzaku. Based on...
Suzaku Observations of AWM 7 Cluster of Galaxies: Temperature, Abundance and Bulk Motions (2007)
Sato, Kosuke, Matsushita, Kyoko, Ishisaki, Yoshitaka, Yamasaki, Noriko Y., Ishida, Manabu, Sasaki, Shin, ...
We carried out 3 observations of the cluster of galaxies AWM 7, for the central region and 20'-east and 20'-west offset regions, with Suzaku. Temperature and abundance profiles are measured out to...
Sato, Kosuke, Yamasaki, Noriko Y., Ishida, Manabu, Ishisaki, Yoshitaka, Ohashi, Takaya, Kawahara, Hajime, ...
We carried out observations of the central and 20' east offset regions of the cluster of galaxies Abell 1060 with Suzaku. Spatially resolved X-ray spectral analysis has revealed temperature and...
Discovery of a new X-ray transient source in the Scutum region with Suzaku (2007)
Yamauchi, Shigeo, Ebisawa, Ken, Bamba, Aya, Ishida, Manabu, Iwasawa, Kazushi, Tanaka, Yasuo, ...
The X-ray telescope onboard Suzaku (2007)
Serlemitsos, Peter J., Soong, Yang, Chan, Kai-Wing, Okajima, Takashi, Lehan, John P., Maeda, Yoshitomo, ...
The X-ray observatory Suzaku (2007)
Mitsuda, Kazuhisa, Bautz, Mark, Inoue, Hajime, Kelley, Richard L., Koyama, Katsuji, Kunieda, Hideyo, ...
On-orbit performance of the X-ray telescopes and thermal wobbling of the Suzaku satellite (2007)
Maeda, Yoshitomo, Ebara, Masatoshi, Fujimoto, Ryuichi, Hayashi, Takayuki, Inoue, Hirohiko, Ishisaki, Yoshitaka, ...
Suzaku Observations of the Local and Distant Hot ISM (2006)
Smith, Randall K., Bautz, Mark W., Edgar, Richard J., Hamaguchi, Kenji, Hughes, John P., Ishida, Manabu, ...
Suzaku observed the molecular cloud MBM12 and a blank field less than 3 degrees away to separate the local and distant components of the diffuse soft X-ray background. Towards MBM12, a local (D< 275...
An Apparent Hard X-ray Decline of CH Cygni (2006)
Mukai, Koji, Ishida, Manabu, Kilbourne, Caroline, Mori, Hideyuki, Terada, Yukikatsu, Chan, Kai-Wing, ...
CH Cygni is a symbiotic star consisting of an M giant and an accreting white dwarf, which is known to be a highly variable X-ray source with a complex, two-component, spectra. Here we report on two...
X-ray Spectral Study of the Photoionized Stellar Wind in Vela~X-1 (2006)
Watanabe, Shin, Sako, Masao, Ishida, Manabu, Ishisaki, Yoshitaka, Kahn, Steven M., Kohmura, Takayoshi, ...
We present results from quantitative modeling and spectral analysis of the high mass X-ray binary Vela X-1 obtained with the Chandra HETGS. The spectra exhibit emission lines from H-like and He-like...
Detailed XMM-Newton Observation of the Cluster of Galaxies Abell 1060 (2006)
Hayakawa, Akira, Hoshino, Akio, Ishida, Manabu, Furusho, Tae, Yamasaki, Noriko Y., Ohashi, Takaya
We present results from the XMM-Newton observation of the non-cooling flow cluster A1060. Large effective area of XMM-Newton enables us to investigate the nature of this cluster in unprecedented...
Density Diagnostics of the Hot Plasma in AE Aquarii with XMM-Newton (2004)
Itoh, Kei, Ishida, Manabu, Kunieda, Hideyo
High resolution spectroscopy of AE Aquarii with the XMM-Newton RGS has enabled us to measure the electron number density of the X-ray-emitting hot plasma to be ~1E11/cm**-3 by means of intensity...
The Anisotropic Transfer of Resonance Photons in Hot Plasmas on Magnetized White Dwarfs (2004)
Terada, Yukikatsu, Ishida, Manabu, Makishima, Kazuo
In order to confirm the anisotropic effect of resonance photons in hot accretion columns on white dwarfs in magnetic cataclysmic variables, proposed by Terada etal (2001), systematic studies with...
Searching for cosmic missing baryons with DIOS -- Diffuse Intergalactic Oxygen Surveyor -- (2004)
Suto, Yasushi, Yoshikawa, Kohji, Yamasaki, Noriko Y., Mitsuda, Kazuhisa, Fujimoto, Ryuichi, Furusho, Tae, ...
Approximately 30 to 50 percent of the total baryons in the present universe is supposed to take a form of warm/hot intergalactic medium (WHIM) whose X-ray continuum emission is very weak. In order to...
Itoh, Kei, Kunieda, Hideyo, Maeda, Yoshitomo, Misaki, Kazutami, Serlemitos, Peter J., Shibata, Ryo, ...
Possibility of a white dwarf as the accreting compact Star in ci cam (xte j0421+560) (2004)
Ishida , Manabu, Morio , Kazuyuki, Ueda , Yoshihiro
Aunque CI Cam, la cual presentó una explosión en abril de 1998, ha sido considerada como una fuente transitoria de rayos X suaves (SXT) que alberga un agujero negro, posee a la vez ciertas...
Possibility of a White Dwarf as the Accreting Compact Star in CI Cam (= XTE J0421+560) (2003)
Ishida, Manabu, Morio, Kazuyuki, Ueda, Yoshihiro
We present results from ASCA observations of the binary CI Cam both in quiescence and in outburst in order to identify its central accreting object. The quiescence spectrum of CI Cam consists of soft...
Watanabe, Shin, Sako, Masao, Ishida, Manabu, Ishisaki, Yoshitaka, Kahn, Steve M., Kohmura, Takayoshi, ...
We report the detection of a fully-resolved, Compton-scattered emission line in the X-ray spectrum of the massive binary GX 301-2 obtained with the High Energy Transmission Grating Spectrometer...
Study of the X-Ray Background Spectrum and its Large-Scale Fluctuation with ASCA (2002)
Kushino, Akihiro, Ishisaki, Yoshitaka, Morita, Umeyo, Yamasaki, Noriko Y., Ishida, Manabu, Ohashi, Takaya, ...
We studied the energy spectrum and the large-scale fluctuation of the X-ray background with the ASCA GIS based on the ASCA MSS and LSS observations. A total of 91 fields with Galactic latitude |b|>10...
Kawasaki, Masahiro, Ozaki, Masanobu, Nagase, Fumiaki, Masai, Kuniaki, Ishida, Manabu, Petre, Robert
We present the results of X-ray spatial and spectral studies of the ``mixed-morphology'' supernova remnant IC 443 using ASCA. IC 443 has a center-filled image in X-ray band, contrasting with the...
Isogai, Yasuhiro, Ota, Motonori, Ishii, Anna, Ishida, Manabu, Nishikawa, Ken
Structural uniqueness is characteristic of native proteins and is essential to express their biological functions. The major factors that bring about the uniqueness are specific interactions between...
The early X-ray emission from V382 Velorum (=Nova Vel 1999): An internal shock model (2001)
We present the results of ASCA and RXTE observations of the early X-ray emission from the classical nova V382 Velorum. Its ASCA spectrum was hard (kT~10 keV) with a strong (10**23 cm**-2) intrinsic...