845 citations · 3.4k across the 97 of their papers we have counts for
12 papers · 1 filter
Suzaku Observations of SGR 1900+14 and SGR 1806-20
Yujin E. Nakagawa, Tatehiro Mihara, Atsumasa Yoshida +8
Spectral and timing studies of Suzaku ToO observations of two SGRs, 1900+14 and 1806-20, are presented. The X-ray quiescent emission spectra were well fitted by a two blackbody fun…
Suzaku Observation of the Anomalous X-ray Pulsar CXOU J164710.2--455216
Sachindra Naik, Tadayasu Dotani, Nobuyuki Kawai +11
Suzaku TOO observation of the anomalous X-ray pulsar CXOU J164710.2-455216 was performed on 2006 September 23--24 for a net exposure of 38.8 ks. During the observation, the XIS was…
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 Observations of Hercules X-1 : Measurements of the Two Cyclotron Harmonics
Teruaki Enoto, Kazuo Makishima, Yukikatsu Terada +10
The accretion-powered pulsar Her X-1 was observed with Suzaku twice in its main-on state, on 2005 October 5-6 and 2006 March 29-30, for a net exposure of 30.5 ks and 34.4 ks, respe…
A search for cyclotron resonance features with INTEGRAL
Y. Okada, H. Niko, M. Kokubun +6
We present an INTEGRAL observation of the Cen-Crux region in order to search the electron cyclotron resonance scattering features from the X-ray binary pulsars. During the AO1 200k…
NGC 4151: an intrinsically average Seyfert 1
Andrzej A. Zdziarski, Karen M. Leighly, Masaru Matsuoka +2
We present a detailed analysis of a long, 100 ksec, observation of NGC 4151 by ASCA, contemporaneous with an observation by the CGRO/OSSE. We fit the data with physical models incl…
A Rapid X-ray Flare in the Radio-loud Narrow Line Quasar PKS 0558-504
T. G. Wang, M. Matsuoka, T. Kubo +2
We report the detection of a very short time scale flare in the radio-loud narrow line quasars PKS 0558-504 by using ASCA. The X-ray count rates increased and decreased by a factor…
Evidence of thick obscuring matter revealed in the X-ray spectrum of the Z=4.28 quasar RXJ1028.6-0844
W. Yuan, M. Matsuoka, T. Wang +3
We report the discovery of an unambiguous, substantial low-energy cutoff in the broad band X-ray spectrum of the radio quasar RXJ1028.6-0844 at a redshift of 4.276 obtained with th…
Detection of Iron Emission Line from the Galaxy Cluster Including the Radio Galaxy 3C220.1 at z=0.62
Naomi Ota, Kazuhisa Mitsuda, Makoto Hattori +1
We have detected an emission line feature at 4 keV in the X-ray emission from a sky region including the distant radio galaxy 3C220.1(z=0.62) obtained with ASCA. The line energy is…
A BeppoSAX study of the pulsating transient X0115+63: the first X-ray spectrum with four cyclotron harmonic features
A. Santangeo, A. Segreto, S. Giarrusso +9
The recurrent hard pulsating X-ray transient §was observed with \B on March 19, when the source was at a 2--10 keV flux level of 310~mCrab. We report on the high energy spect…
ASCA Observations of the Seyfert 2 Galaxy NGC 7582: An Obscured and Scattered View of the Hidden Nucleus
S. -J. Xue, C. Otani, T. Mihara +2
ASCA observations of the Seyfert 2 galaxy NGC 7582 revealed it was highly variable on the timescale of s in the hard X-ray (2-10 keV) band, while the soft X-ray (…
Spectral Variability and iron line emission in the ASCA Observations of the Seyfert 1 Galaxy NGC4051
Matteo Guainazzi, Tatehiro Mihara, Chiko Otani +1
We present the results of an extensive analysis of the ``ASCA'' AO2 observation of the Seyfert 1 galaxy NGC4051. The target exhibits broadband [0.5--10 keV] variability by a factor…