Ryosuke Ishiwata
Nihon University
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Publication
Featured researches published by Ryosuke Ishiwata.
X‐RAY ASTRONOMY 2009; PRESENT STATUS, MULTI‐WAVELENGTH APPROACH AND FUTURE PERSPECTIVES: Proceedings of the International Conference | 2010
Masaru Matsuoka; M. Suzuki; Kazuyoshi Kawasaki; Satoshi Ueno; Hiroshi Tomida; Yasuki Adachi; Masaki Ishikawa; Y. Itamoto; Daiki Takahashi; Haruyoshi Katayama; Ken Ebisawa; Tatehiro Mihara; Mitsuhiro Kohama; Mutsumi Sugizaki; Yujin E. Nakagawa; Takayuki Yamamoto; Hiroshi Tsunemi; Masashi Kimura; Nobuyuki Kawai; Mikio Morii; Kousuke Sugimori; A. Yoshida; Kazutaka Yamaoka; Satoshi Nakahira; Ichiro Takahashi; Hitoshi Negoro; Motoki Nakajima; Ryosuke Ishiwata; S. Miyoshi; Hiroyuki Ozawa
MAXI, the first astronomical payload attached to ISS JEM‐EF, began operation on August 3, 2009 for monitoring all‐sky X‐ray images every ISS orbit (92 min). This paper reports the first results obtained during the 1‐month test observations. All instruments as well as two main X‐ray slit cameras, the GSC and SSC, worked as we expected. The detection limits of MAXI‐GSC are about 25 mCrab and 8 mCrab for one ISS orbit (92 min) and 1‐day observations, respectively. GSC covers about 76% and 96% of the entire sky for respective single‐orbit and 1‐day observations. MAXI has detected a transient X‐ray pulsar A0535+26, an X‐ray burst, and a gamma‐ray burst in the first month of the test observation period.
X‐RAY ASTRONOMY 2009; PRESENT STATUS, MULTI‐WAVELENGTH APPROACH AND FUTURE PERSPECTIVES: Proceedings of the International Conference | 2010
Hitoshi Negoro; S. Miyoshi; Hiroyuki Ozawa; Ryosuke Ishiwata; N. Nakajima; Masaru Matsuoka; Kazuyoshi Kawasaki; Satoshi Ueno; Hiroshi Tomida; M. Suzuki; Masaki Ishikawa; Tatehiro Mihara; Mitsuhiro Kohama; Mutsumi Sugizaki; Yujin E. Nakagawa; Hiroshi Tsunemi; Nobuyuki Kawai; Mikio Morii; Atsumasa Yoshida; Kazutaka Yamaoka; Yoshihiro Ueda; Naoki Isobe; Satoshi Eguchi
MAXI, Monitor of All‐sky X‐ray Image, is the first astronomical telescope onboard the ISS. One of the main goals of our mission is to discover new transient objects by scanning more than 95% of the sky every ∼92 min with two types of X‐ray cameras, Gas Slit Camera (GSC) and Solid‐state Slit Camera (SSC) [1].We have developed a completely new data analysis system, a nova alert system, to find transient objects and send alerts to the world as soon as possible. Here we describe the current status of the system, and transient objects discovered with the system.
Archive | 2010
Kazutaka Yamaoka; Hitoshi Negoro; Mutsumi Sugizaki; Tatehiro Mihara; Mitsuhiro Kohama; Yujin E. Nakagawa; T. Yamamoto; Masaru Matsuoka; Kazuyoshi Kawasaki; Satoshi Ueno; Hiroshi Tomida; M. Suzuki; Masaki Ishikawa; Nobuyuki Kawai; Mikio Morii; Kosuke Sugimori; Atsumasa Yoshida; Satoshi Nakahira; Hiroshi Tsunemi; Masashi Kimura; Motoki Nakajima; Ryosuke Ishiwata; S. Miyoshi; Hideki Ozawa; Yutaka Ueda; Naoki Isobe; Shuji Eguchi; Kazuo Hiroi; Arata Daikyuji
Archive | 2010
Naoki Isobe; Hitoshi Negoro; Masaru Matsuoka; Kazuyoshi Kawasaki; Satoshi Ueno; Hiroshi Tomida; M. Suzuki; Masaki Ishikawa; Tatehiro Mihara; Mutsumi Sugizaki; Mitsuhiro Kohama; Yujin E. Nakagawa; T. Yamamoto; Tsuyoshi Saotome; Nobuyuki Kawai; Mikio Morii; Kosuke Sugimori; Atsumasa Yoshida; Kazutaka Yamaoka; Satoshi Nakahira; Hiroshi Tsunemi; Masashi Kimura; Motoki Nakajima; S. Miyoshi; Hideki Ozawa; Ryosuke Ishiwata; Yutaka Ueda; Shuji Eguchi; Kazuo Hiroi; Arata Daikyuji
Archive | 2010
Kazutaka Yamaoka; Mutsumi Sugizaki; Satoshi Nakahira; Tatehiro Mihara; Mitsuhiro Kohama; Yujin E. Nakagawa; T. Yamamoto; Masaru Matsuoka; Kazuyoshi Kawasaki; Satoshi Ueno; Hiroshi Tomida; M. Suzuki; Masaki Ishikawa; Nobuyuki Kawai; Mikio Morii; Kosuke Sugimori; Atsumasa Yoshida; Hiroshi Tsunemi; Masashi Kimura; Hitoshi Negoro; Motoki Nakajima; Ryosuke Ishiwata; S. Miyoshi; Hideki Ozawa; Yutaka Ueda; Naoki Isobe; Shuji Eguchi; Kazuo Hiroi; Arata Daikyuji
Archive | 2010
Motoki Nakajima; S. Miyoshi; Mikio Morii; Kosuke Sugimori; Nobuyuki Kawai; Hitoshi Negoro; Hideki Ozawa; Ryosuke Ishiwata; M. Suzuki; Masaru Matsuoka; Kazuyoshi Kawasaki; Satoshi Ueno; Hiroshi Tomida; Masaki Ishikawa; Shuji Eguchi; Yutaka Ueda; Naoki Isobe; Kazuo Hiroi; Satoshi Nakahira; Atsumasa Yoshida; Kazutaka Yamaoka; Tatehiro Mihara; Mitsuhiro Kohama; Yujin E. Nakagawa; Mutsumi Sugizaki; T. Yamamoto; Hiroshi Tsunemi; Masashi Kimura; Arata Daikyuji
Archive | 2010
Mikio Morii; Nobuyuki Kawai; Kosuke Sugimori; Satoshi Nakahira; Atsumasa Yoshida; Kazutaka Yamaoka; Mutsumi Sugizaki; Tatehiro Mihara; Mitsuhiro Kohama; Yujin E. Nakagawa; T. Yamamoto; Tsuyoshi Saotome; Hitoshi Negoro; Motoki Nakajima; S. Miyoshi; Hideki Ozawa; Ryosuke Ishiwata; Hiroshi Tomida; Masaru Matsuoka; Kazuyoshi Kawasaki; Satoshi Ueno; M. Suzuki; Masaki Ishikawa; Hiroshi Tsunemi; Masashi Kimura; Yutaka Ueda; Naoki Isobe; Shuji Eguchi; Kazuo Hiroi; Arata Daikyuji
Archive | 2009
Kazutaka Yamaoka; Mutsumi Sugizaki; Tatehiro Mihara; Mitsuhiro Kohama; Yujin E. Nakagawa; T. Yamamoto; Masaru Matsuoka; Kazuyoshi Kawasaki; Satoshi Ueno; Hiroshi Tomida; M. Suzuki; Masaki Ishikawa; Nobuyuki Kawai; Mikio Morii; Kosuke Sugimori; Atsumasa Yoshida; Satoshi Nakahira; Hiroshi Tsunemi; Masashi Kimura; Hitoshi Negoro; Motoki Nakajima; Ryosuke Ishiwata; S. Miyoshi; Hideki Ozawa; Yutaka Ueda; Naoki Isobe; Shuji Eguchi; Kazuo Hiroi; Arata Daikyuji
Archive | 2009
Mikio Morii; Motoki Nakajima; Masaru Matsuoka; Kentaro Kawasaki; Satoshi Ueno; Hiroshi Tomida; M. Suzuki; Masaki Ishikawa; Tatehiro Mihara; Mitsuhiro Kohama; Yujin E. Nakagawa; Mutsumi Sugizaki; T. Yamamoto; Nobuyuki Kawai; Kosuke Sugimori; Atsumasa Yoshida; Kazutaka Yamaoka; Satoshi Nakahira; Hiroshi Tsunemi; Masashi Kimura; Hitoshi Negoro; S. Miyoshi; Hideki Ozawa; Ryosuke Ishiwata; Yutaka Ueda; Naoki Isobe; Shuji Eguchi; Kazuo Hiroi
Archive | 2009
Masaru Matsuoka; S. Miyoshi; Motoki Nakajima; Hitoshi Negoro; Ryosuke Ishiwata; Kentaro Kawasaki; Satoshi Ueno; Hiroshi Tomida; M. Suzuki; Masaki Ishikawa; Tatehiro Mihara; Mitsuhiro Kohama; Yujin E. Nakagawa; Mutsumi Sugizaki; T. Yamamoto; Nobuyuki Kawai; Mikio Morii; Kosuke Sugimori; Atsumasa Yoshida; Kazutaka Yamaoka; Satoshi Nakahira; Hiroshi Tsunemi; Masashi Kimura; Yutaka Ueda; Naoki Isobe; Satoshi Eguchi; Kazuo Hiroi
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