647 citations · 946 across the 12 of their papers we have counts for
13 papers
Machine learning application to Fermi-LAT data: sharpening all-sky map and emphasizing variable sources
Shogo Sato, Jun Kataoka, Soichiro Ito +6
A novel application of machine-learning (ML) based image processing algorithms is proposed to analyze an all-sky map (ASM) obtained using the Fermi Gamma-ray Space Telescope. An at…
Soft and Hard X-Ray Emissions from the Anomalous X-ray Pulsar 4U 0142+61 Observed with Suzaku
Teruaki Enoto, Kazuo Makishima, Kazuhiro Nakazawa +4
The anomalous X-ray pulsar 4U 0142+61 was observed with Suzaku on 2007 August 15 for a net exposure of -100 ks, and was detected in a 0.4 to ~70 keV energy band. The intrinsic puls…
Effects of Compton scattering on the Gamma Ray Spectra of Solar flares
Jun'ichi Kotoku, Kazuo Makishima, Yukari Matsumoto +3
Using fully relativistic GEANT4 simulation tool kit, the transport of energetic electrons generated in solar flares was Monte-Carlo simulated, and resultant bremsstrahlung gamma-ra…
HETE-2 Observations of the X-Ray Flash XRF 040916
Makoto Arimoto, Nobuyuki Kawai, Atsumasa Yoshida +43
A long X-ray flash was detected and localized by the instruments aboard the High Energy Transient Explorer II (HETE-2) at 00:03:30 UT on 2004 September 16. The position was reporte…
A Comprehensive Study of Short Bursts from SGR 1806-20 and SGR 1900+14 Detected by HETE-2
Yujin E. Nakagawa, Atsumasa Yoshida, Kevin Hurley +20
We present the results of temporal and spectral studies of the short burst (less than a few hundred milliseconds) from the soft gamma repeaters (SGRs) 1806-20 and 1900+14 using the…
Discovery of a New X-Ray Burst/Millisecond Accreting Pulsar HETE J1900.1-2455
M. Suzuki, N. Kawai, T. Tamagawa +16
A class of low-mass X-ray binary sources are known to be both X-ray burst sources and millisecond pulsars at the same time. A new source of this class was discovered by High Energy…
Hard X-ray Detector (HXD) on Board Suzaku
T. Takahashi, K. Abe, M. Endo +66
The Hard X-ray Detector (HXD) on board Suzaku covers a wide energy range from 10 keV to 600 keV by combination of silicon PIN diodes and GSO scintillators. The HXD is designed to a…
Suzaku Observation of Two Ultraluminous X-Ray Sources in NGC 1313
T. Mizuno, R. Miyawaki, K. Ebisawa +19
Two ultraluminous X-ray sources (ULXs) in the nearby Sb galaxy NGC 1313, named X-1 and X-2, were observed with Suzaku on 2005 September 15. During the observation for a net exposur…
An Optically Dark GRB Observed by HETE-2: GRB 051022
Yujin E. Nakagawa, Atsumasa Yoshida, Satoshi Sugita +33
GRB 051022 was detected at 13:07:58 on 22 October 2005 by HETE-2. The location of GRB 051022 was determined immediately by the flight localization system. This burst contains multi…
HETE-2 Localization and Observations of the Gamma-Ray Burst GRB 020813
R. Sato, the HETE Science Team
A bright, long gamma-ray burst (GRB) was detected and localized by the instruments on board the High Energy Transient Explorer 2 satellite (HETE-2) at 02:44:19.17 UTC (9859.17 s UT…
A Statistical Study of Gamma-Ray Emitting Solar Flares Observed with Yohkoh
Yukari Matsumoto, Kazuo Makishima, Jun'ichi Kotoku +5
Gamma-ray emitting solar flares observed with Yohkoh were analyzed from a statistical viewpoint. The four-band hard X-ray (15--95 keV) photometric data, taken with the Hard X-ray T…
A Possible X-Ray Periodicity at Several Tens Hours of a Ultra-Luminous Compact X-Ray Source in IC 342
M. Sugiho, J. Kotoku, K. Makishima +4
A long (155 hours) ASCA observation was performed of two ultra luminous compact X-ray sources, Source 1 and Source 2, in the spiral galaxy IC 342. While Source 1 that was in a hard…
Discovery of Spectral Transitions from Two Ultra-Luminous Compact X-Ray Sources in Ic342
Aya Kubota, Tsunefumi Mizuno, Kazuo Makishima +4
Two {\it ASCA} observations were made of two ultra-luminous compact X-ray sources (ULXs), Source 1 and Source 2, in the spiral galaxy IC 342. In the 1993 observation, Source 2 show…