Shin'ya Yamada

Suzaku Observation of the Metallicity in the Interstellar Medium of NGC 4258 (2009)

Konami, Saori, Sato, Kosuke, Matsushita, Kyoko, Yamada, Shin'ya, Isobe, Naoki, Senda, Atsushi, ...

The Suzaku X-ray satellite observed the nearby spiral galaxy NGC 4258 for a total good exposure time of 100 ks. We present an analysis of the Suzaku XIS data, in which we confirm that the 0.5--2 keV...

Modeling and Reproducibility of Suzaku HXD PIN/GSO Background (2009)

Fukazawa, Yasushi, Mizuno, Tsunefumi, Watanabe, Shin, Kokubun, Motohide, Takahashi, Hiromitsu, Kawano, Naomi, ...

Suzaku Hard X-ray Detector (HXD) achieved the lowest background level than any other previously or currently operational missions sensitive in the energy range of 10--600 keV, by utilizing PIN...

Suzaku Results on the Obscured Low-Luminosity Active Galactic Nucleus in NGC 4258 (2008)

Yamada, Shin'ya, Itoh, Takeshi, Makishima, Kazuo, Nakazawa, Kazuhiro

In 2006 June, the obscured low luminosity active galactic nucleus in the nearby Seyfert 1.9 galaxy NGC 4258 was observed with Suzaku for ~ 100 ks. Utilizing the XIS and the HXD, the nucleus emission...

Suzaku Results on Cygnus X-1 in the Low/Hard State (2008)

Makishima, Kazuo, Takahashi, Hiromitsu, Yamada, Shin'ya, Done, Chris, Kubota, Aya, Dotani, Tadayasu, ...

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 10^37 erg/s. The XIS...