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X-Ray Spectroscopy of the Classical Nova V458 Vulpeculae with Suzaku
Masahiro Tsujimoto, Dai Takei, Jeremy J. Drake +2
We conducted a target of opportunity X-ray observation of the classical nova V458 Vulpeculae 88 days after the explosion using the Suzaku satellite. With a 20 ks exposure, the X-ra…
Search for Near-Infrared Pulsation of the Anomalous X-ray Pulsar 4U 0142+61
Mikio Morii, Naoto Kobayashi, Nobuyuki Kawai +4
We have searched for pulsation of the anomalous X-ray pulsar (AXP) 4U 0142+61 in the K' band ( m) using the fast-readout mode of IRCS at the Subaru 8.2-m tel…
Suzaku Results on Cygnus X-1 in the Low/Hard State
Kazuo Makishima, Hiromitsu Takahashi, Shin'ya Yamada +9
The black-hole binary Cygnus X-1 was observed for 17 ks with the Suzaku X-ray observatory in 2005 October, while it was in a low/hard state with a 0.7-300 keV luminosity of 4.6 x 1…
Suzaku Observation of AXP 1E 1841-045 in SNR Kes 73
M. Morii, S. Kitamoto, N. Shibazaki +7
Anomalous X-ray pulsars (AXPs) are thought to be magnetars, which are neutron stars with ultra strong magnetic field of -- G. Their energy spectra below 10…
Broad band X-ray spectroscopy of A0535+262 with SUZAKU
S. Naik, T. Dotani, Y. Terada +9
The transient X-ray binary pulsar A0535+262 was observed with Suzaku on 2005 September 14 when the source was in the declining phase of the August-September minor outburst. The ~10…
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…
Low/Hard State Spectra of GRO J1655-40 Observed with Suzaku
Hiromitsu Takahashi, Yasushi Fukazawa, Tsunefumi Mizuno +23
The Galactic black-hole binary GRO J165540 was observed with Suzaku on 2005 September 22--23, for a net exposure of 35 ks with the X-ray Imaging Spectrometer (XIS) and 20 ks wit…
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…
Suzaku Observation of Diffuse X-ray Emission from the Carina Nebula
Kenji Hamaguchi, Robert Petre, Hironori Matsumoto +9
We studied extended X-ray emission from the Carina Nebula taken with the Suzaku CCD camera XIS on 2005 Aug. 29. The X-ray morphology, plasma temperature and absorption to the plasm…
Cyclotron resonance energies at a low X-ray luminosity: A0535+262 observed with Suzaku
Y. Terada, T. Mihara, M. Nakajima +28
The binary X-ray pulsar A0535+262 was observed with the Suzaku X-ray observatory, on 2005 September 14 for a net exposure of 22 ksec. The source was in a declining phase of a minor…
Periodic long-term X-ray and radio variability of Cygnus X-1
Pawel Lachowicz, Andrzej A. Zdziarski, Alex Schwarzenberg-Czerny +2
We present a comprehensive analysis of long-term periodic variability of Cyg X-1 using the method of multiharmonic analysis of variance (mhAoV) applied to available monitoring data…
Wide band X-ray Imager (WXI) and Soft Gamma-ray Detector (SGD) for the NeXT Mission
T. Takahashi, A. Awaki, T. Dotani +25
The NeXT mission has been proposed to study high-energy non-thermal phenomena in the universe. The high-energy response of the super mirror will enable us to perform the first sens…
GX 339-4: the distance, state transitions, hysteresis and spectral correlations
Andrzej A. Zdziarski, Marek Gierlinski, Joanna Mikolajewska +4
We study X-ray and variability and distance of GX 339-4. We derive d>7 kpc, based on recent determination of the binary parameters. We study data from the Ginga/ASM, the CGRO/BATSE…
Energy Spectra and Normalized Power Spectral Densities of X-Ray Nova GS 2000+25
K. Terada, S. Kitamoto, H. Negoro +1
The X-ray energy spectra and Normalized Power Spectral Densities (NPSDs) of an X-ray nova, GS 2000+25, were investigated. The X-ray energy spectra of the source consist of two comp…
Long-term X-ray variability and state transition of GX 339-4
A. K. H. Kong, P. A. Charles, E. Kuulkers +1
With extensive monitoring data spanning over 30 years from Vela 5B, Ariel 5, Ginga, Compton Gamma Ray Observatory, Rossi X-ray Timing Explorer and BeppoSAX, we find evidence for lo…
Changes in the long term intensity variations in Cyg X-2 and LMC X-3
B. Paul, S. Kitamoto, F. Makino
We report the detection of changes in the long-term intensity variations in two X-ray binaries, Cyg X-2 and LMC X-3. In this work, we have used the long-term light curves obtained…
Correlation Between Luminosity and Accretion Torque in 4U 1626-67 and GX 301-2
Brian A. Vaughan, Shunji Kitamoto
We present X-ray light curves and energy spectra for the persistent accreting pulsars 4U 1626-67 and GX 301-2 measured by the All-Sky Monitor (ASM) on Ginga from 1987 March - 1991…
Complex outburst behaviour from the black-hole candidate 4U 1630-47
E. Kuulkers, A. N. Parmar, S. Kitamoto +2
We present data from different epochs in 1978, 1987-1991 and 1996 from the black-hole candidate 4U1630-47. For the first time we present almost complete coverage of the outbursts w…