783 citations · 5.6k across the 96 of their papers we have counts for
32 papers · 1 filter
Redshifted emission lines and radiative recombination continuum from the Wolf-Rayet binary theta Muscae: evidence for a triplet system?
Yasuharu Sugawara, Yohko Tsuboi, Yoshitomo Maeda
We present XMM-Newton observations of the WC binary Theta Muscae (WR 48), the second brightest Wolf-Rayet binary in optical wavelengths. The system consists of a short-period (19.1…
Timing and Spectral Study of AX J1745.6-2901 with Suzaku
Yoshiaki Hyodo, Yoshihiro Ueda, Takayuki Yuasa +3
The eclipsing low-mass X-ray binary AX J1745.6-2901 was observed with Suzaku in its outburst phase. Combining the Chandra observation made 1.5 month earlier than Suzaku, we determi…
Deconvolution of Images Taken with the Suzaku X-ray Imaging Spectrometer
Mutsumi Sugizaki, Tuneyoshi Kamae, Yoshitomo Maeda
We present a non-iterative method to deconvolve the spatial response function or the point spread function (PSF) from images taken with the Suzaku X-ray Imaging Spectrometer (XIS).…
Restoring the Suzaku Source Position Accuracy and Point-Spread Function
Yasunobu Uchiyama, Yoshitomo Maeda, Masatoshi Ebara +9
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 poi…
The Subaru/XMM-Newton Deep Survey (SXDS) - II. Optical Imaging and Photometric Catalogs
H. Furusawa, G. Kosugi, M. Akiyama +33
We present multi-waveband optical imaging data obtained from observations of the Subaru/XMM-Newton Deep Survey (SXDS). The survey field, centered at R.A.=02:18:00, decl.=-05:00:00,…
Suzaku Detection of an Intense X-Ray Flare from an A-type Star HD161084
Junichiro Miura, Masahiro Tsujimoto, Yohko Tsuboi +4
We report a serendipitous detection of an intense X-ray flare from the Tycho reference source HD 161084 during a Suzaku observation of the Galactic Center region for 20 ks. The X-r…
Suzaku Detection of Extended/Diffuse Hard X-Ray Emission from the Galactic Center
Takayuki Yuasa, Ken-ichi Tamura, Kazuhiro Nakazawa +12
Five on-plane regions within +/- 0.8deg of the Galactic center were observed with the Hard X-ray Detector (HXD) and the X-ray Imaging Spectrometer (XIS) onboard Suzaku. From all re…
Suzaku Spectroscopy of the Extended X-Ray Emission in M17
Yoshiaki Hyodo, Masahiro Tsujimoto, Kenji Hamaguchi +5
We present the results of a Suzaku spectroscopic study of the soft extended X-ray emission in the HII region M17. The spectrum of the extended emission was obtained with a high sig…
Detection of a Rare Supersoft Outburst Event during a Suzaku Observation of 1E0102.2-7219
D. Takei, M. Tsujimoto, S. Kitamoto +4
We report the detection of a transient X-ray source toward the Small Magellanic Cloud (SMC) using the X-ray Imaging Spectrometer (XIS) onboard the Suzaku telescope. The source was…
Monte-Carlo Simulator and Ancillary Response Generator of Suzaku XRT/XIS System for Spatially Extended Source Analysis
Y. Ishisaki, Y. Maeda, R. Fujimoto +31
We have developed a framework for the Monte-Carlo simulation of the X-Ray Telescopes (XRT) and the X-ray Imaging Spectrometers (XIS) onboard Suzaku, mainly for the scientific analy…
Swift and Suzaku Observations of the X-Ray Afterglow from the GRB 060105
M. S. Tashiro, K. Abe, L. Angelini +34
Results are presented of early X-ray afterglow observations of GRB 060105 by Swift and Suzaku. The bright, long gamma-ray burst GRB 060105 triggered the Swift Burst Alert Telescope…
Discoveries of Diffuse Iron Line Sources from the Sgr B Region
Katsuji Koyama, Tatsuya Inui, Yoshiaki Hyodo +8
The radio complex Sgr B region is observed with the X-Ray Imaging Spectrometers (XIS) on board Suzaku. This region exhibits diffuse iron lines at 6.4, 6.7 and 6.9 keV, which are K$…
Iron and Nickel Line Diagnostics for the Galactic Center Diffuse Emission
Katsuji Koyama, Yoshiaki Hyodo, Tatsuya Inui +14
We have observed the diffuse X-ray emission from the Galactic center (GC) using the X-ray Imaging Spectrometer (XIS) on Suzaku. The high-energy resolution and the low-background or…
Chandra Deep X-ray Observation of a Typical Galactic Plane Region and Near-Infrared Identification
K. Ebisawa, M. Tsujimoto, A. Paizis +13
Using the Chandra Advanced CCD Imaging Spectrometer Imaging array (ACIS-I), we have carried out a deep hard X-ray observation of the Galactic plane region at (l,b) ~ (28.5, 0.0), w…
A Candidate Neutron Star Associated with Galactic Center Supernova Remnant Sagittarius A East
Sangwook Park, Michael P. Muno, Frederick K. Baganoff +6
We present imaging and spectral studies of the supernova remnant (SNR) Sagittarius (Sgr) A East from deep observations with the {\it Chandra X-Ray Observatory}. The spatially-resol…
Down-Sizing in Galaxy Formation at z~1 in the Subaru/XMM-Newton Deep Survey (SXDS)
Tadayuki Kodama
We use the deep wide-field optical imaging data of the Subaru/XMM-Newton Deep Survey (SXDS) to discuss the luminosity (mass) dependent galaxy colours down to z'=25.0 (5 x 10^9 h_{7…
X-rays from HH 80, HH 81, and the Central Region
Steven H. Pravdo, Yohko Tsuboi, Yoshitomo Maeda
We report detections of X-rays from HH 80 and HH 81 with the ACIS instrument on the Chandra X-ray Observatory. These are among the most luminous HH sources in the optical and they…
Characteristics of Diffuse X-Ray Line Emission within 20 pc of the Galactic Center
Sangwook Park, Michael P. Muno, Frederick K. Baganoff +5
Over the last 3 yrs, the Galactic center (GC) region has been monitored with the Chandra X-Ray Observatory. With 11 Chandra observations through 2002 June, the total effective expo…
Coronal X-ray emission from an intermediate-age brown dwarf
Yohko Tsuboi, Yoshitomo Maeda, Eric D. Feigelson +4
We report the X-ray detection of the brown dwarf (BD) companion TWA 5B in a Myr old pre-main sequence binary system. We clearly resolve the faint companion (35 photons)…
Near-Infrared Identification of the Dimmest X-ray Sources on the Galactic Plane with the ESO/NTT SOFI Camera
Ken Ebisawa, V. Beckmann, T. J. -L. Courvoisier +5
We have carried out a deep X-ray observation on a typical Galactic plane region with the Chandra ACIS-I instrument with unprecedented sensitivity and spatial resolution, and detect…
Chandra deep X-ray observation on the Galactic plane
K. Ebisawa, A. Bamba, H. Kaneda +4
Using the Chandra ACIS-I instruments, we have carried out the deepest X-ray observation on a typical Galactic plane region at l 28.5 deg, where no discrete X-ray sources have been…
Origin of the Hard X-ray Emission from the Galactic Plane
Ken Ebisawa, Yoshitomo Maeda, Hidehiro Kaneda +1
The Galactic plane is a strong hard x-ray emitter and the emission forms a narrow continuous ridge. The currently known hard x-ray sources are far too few to explain the ridge x-ra…
ASCA X-ray source catalogue in the Galactic Center region
Masaaki Sakano, Katsuji Koyama, Hiroshi Murakami +2
The ASCA satellite made 107 pointing observations on a 5 x 5 deg^2 region around the center of our Milky Way Galaxy (the Galactic Center) from 1993 to 1999. In the X-ray images of…
X-ray source population of the Galactic center region obtained with ASCA
Masaaki Sakano, Katsuji Koyama, Hiroshi Murakami +3
From the ASCA X-ray point-source list in the Galactic center 5x5 degree^2 region, we found the clear correlation between the position of the sources and the absorption. This fact i…