6 papers · 1 filter
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…
Detection of high-energy gamma rays from winter thunderclouds
H. Tsuchiya, T. Enoto, S. Yamada +8
A report is made on a comprehensive observation of a burst-like -ray emission from thunderclouds on the Sea of Japan, during strong thunderstorms on 2007 January 6. The detected…
Upper limits on the solar-neutron flux at the Yangbajing neutron monitor from BATSE-detected solar flares
H. Tsuchiya, H. Miyasaka, E. Takahashi +11
The purpose of this work is to search the Yangbajing neutron monitor data obtained between 1998 October and 2000 June for solar neutrons associated with solar flares. Using the ons…
Observational studies of stellar black hole binaries and ULXs
Aya Kubota, Kazuo Makishima
We outline a framework for understanding the X-ray spectra of high mass accretion rate stellar black holes based on X-ray data from RXTE and ASCA. Three spectral regimes can be sep…
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…
First Results from a XMM-Newton Survey of a Distance-Limited (D<22 Mpc) Sample of Seyfert Galaxies: I- the Agns
M. Cappi, G. Di Cocco, F. Panessa +18
We report here preliminary results from a survey of nearby Seyfert galaxies using the EPIC CCDs on board XMM-Newton. The total sample consists of 28 Seyfert galaxies, and constitut…