Search Results - "Hiroi, Kazuo"

The MAXI Mission on the ISS: Science and Instruments for Monitoring All-Sky X-Ray Images by Matsuoka, Masaru, Kawasaki, Kazuyoshi, Ueno, Shiro, Tomida, Hiroshi, Kohama, Mitsuhiro, Suzuki, Motoko, Adachi, Yasuki, Ishikawa, Masaki, Mihara, Tatehiro, Sugizaki, Mutsumi, Isobe, Naoki, Nakagawa, Yujin, Tsunemi, Hiroshi, Miyata, Emi, Kawai, Nobuyuki, Kataoka, Jun, Morii, Mikio, Yoshida, Atsumasa, Negoro, Hitoshi, Nakajima, Motoki, Ueda, Yoshihiro, Chujo, Hirotaka, Yamaoka, Kazutaka, Yamazaki, Osamu, Nakahira, Satoshi, You, Tetsuya, Ishiwata, Ryoji, Miyoshi, Sho, Eguchi, Satoshi, Hiroi, Kazuo, Katayama, Haruyoshi, Ebisawa, Ken

“…The Monitor of All-sky X-ray Image (MAXI) mission is the first astronomical payload to be installed on the Japanese Experiment Module — Exposed Facility…”
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The First MAXI/GSC Catalog in the High Galactic-Latitude Sky by Hiroi, Kazuo, Ueda, Yoshihiro, Isobe, Naoki, Hayashida, Masaaki, Eguchi, Satoshi, Sugizaki, Mutsumi, Kawai, Nobuyuki, Tsunemi, Hiroshi, Matsuoka, Masaru, Mihara, Tatehiro, Yamaoka, Kazutaka, Ishikawa, Masaki, Kimura, Masashi, Kitayama, Hiroki, Kohama, Mitsuhiro, Matsumura, Takanori, Morii, Mikio, Nakagawa, Yujin E., Nakahira, Satoshi, Nakajima, Motoki, Negoro, Hitoshi, Serino, Motoko, Shidatsu, Megumi, Sootome, Tetsuya, Sugimori, Kousuke, Suwa, Fumitoshi, Toizumi, Takahiro, Tomida, Hiroshi, Tsuboi, Yohko, Ueno, Shiro, Usui, Ryuichi, Yamamoto, Takayuki, Yamazaki, Kyohei, Yoshida, Atsumasa

“…We present the first unbiased source catalog of the Monitor of All-sky X-ray Image (MAXI) mission at high Galactic latitudes ( $\vert b\vert$ $>$ 10 $^{\circ}$…”
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Revisit of Local X-Ray Luminosity Function of Active Galactic Nuclei with the MAXI Extragalactic Survey by Ueda, Yoshihiro, Hiroi, Kazuo, Isobe, Naoki, Hayashida, Masaaki, Eguchi, Satoshi, Sugizaki, Mutsumi, Kawai, Nobuyuki, Tsunemi, Hiroshi, Mihara, Tatehiro, Matsuoka, Masaru, Ishikawa, Masaki, Kimura, Masashi, Kitayama, Hiroki, Kohama, Mitsuhiro, Matsumura, Takanori, Morii, Mikio, Nakagawa, Yujin E., Nakahira, Satoshi, Nakajima, Motoki, Negoro, Hitoshi, Serino, Motoko, Shidatsu, Megumi, Sootome, Tetsuya, Sugimori, Kousuke, Suwa, Fumitoshi, Toizumi, Takahiro, Tomida, Hiroshi, Tsuboi, Yohko, Ueno, Shiro, Usui, Ryuichi, Yamamoto, Takayuki, Yamaoka, Kazutaka, Yamazaki, Kyohei, Yoshida, Atsumasa

“…We constructed a new X-ray (2–10 keV) luminosity function of Compton-thin active galactic nuclei (AGNs) in the local universe, using the first MAXI/GSC source…”
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Spectral Evolution of a New X-Ray Transient MAXI J0556−332 Observed by MAXI, Swift, and RXTE by Sugizaki, Mutsumi, Yamaoka, Kazutaka, Matsuoka, Masaru, Kennea, Jamie A., Mihara, Tatehiro, Hiroi, Kazuo, Ishikawa, Masaki, Isobe, Naoki, Kawai, Nobuyuki, Kimura, Masashi, Kitayama, Hiroki, Kohama, Mitsuhiro, Matsumura, Takanori, Morii, Mikio, Nakagawa, Yujin E., Nakahira, Satoshi, Nakajima, Motoki, Negoro, Hitoshi, Serino, Motoko, Shidatsu, Megumi, Sootome, Tetsuya, Sugimori, Kousuke, Suwa, Fumitoshi, Toizumi, Takahiro, Tomida, Hiroshi, Tsuboi, Yoko, Tsunemi, Hiroshi, Ueda, Yoshihiro, Ueno, Shiro, Usui, Ryuichi, Yamamoto, Takayuki, Yamauchi, Makoto, Yamazaki, Kyohei, Yoshida, Atsumasa

“…We report on the spectral evolution of a new X-ray transient, MAXI J0556 $-$ 332, observed by MAXI, Swift, and RXTE. The source was discovered on 2011 January…”
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Long-Term Monitoring of the Black Hole Binary GX 339−4 in the High/Soft State during the 2010 Outburst with MAXI/GSC by Shidatsu, Megumi, Ueda, Yoshihiro, Nakahira, Satoshi, Negoro, Hitoshi, Yamaoka, Kazutaka, Sugizaki, Mutsumi, Hiroi, Kazuo, Kawai, Nobuyuki, Mihara, Tatehiro, Matsuoka, Masaru, Kimura, Masashi, Ishikawa, Masaki, Isobe, Naoki, Kitayama, Hiroki, Kohama, Mitsuhiro, Matsumura, Takanori, Morii, Mikio, Nakagawa, Yujin E., Nakajima, Motoki, Serino, Motoko, Sootome, Tetsuya, Sugimori, Kousuke, Suwa, Fumitoshi, Toizumi, Takahiro, Tomida, Hiroshi, Tsuboi, Yohko, Tsunemi, Hiroshi, Ueno, Shiro, Usui, Ryuichi, Yamamoto, Takayuki, Yamazaki, Kyohei, Yoshida, Atsumasa

“…We present the results of monitoring the galactic black hole candidate GX 339 $-$ 4 with the Monitor of All-sky X-ray Image (MAXI) / Gas Slit Camera in the…”
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Outburst of LSV+44 17 Observed by MAXI and RXTE, and Discovery of a Dip Structure in the Pulse Profile by Usui, Ryuichi, Morii, Mikio, Kawai, Nobuyuki, Yamamoto, Takayuki, Mihara, Tatehiro, Sugizaki, Mutsumi, Matsuoka, Masaru, Hiroi, Kazuo, Ishikawa, Masaki, Isobe, Naoki, Kimura, Masashi, Kitayama, Hiroki, Kohama, Mitsuhiro, Matsumura, Takanori, Nakahira, Satoshi, Nakajima, Motoki, Negoro, Hitoshi, Serino, Motoko, Shidatsu, Megumi, Sootome, Tetsuya, Sugimori, Kousuke, Suwa, Fumitoshi, Toizumi, Takahiro, Tomida, Hiroshi, Tsuboi, Yoko, Tsunemi, Hiroshi, Ueda, Yoshihiro, Ueno, Shiro, Yamaoka, Kazutaka, Yamazaki, Kyohei, Yoshida, Atsumasa

“…We report on the first observation of an X-ray outburst of a Be/X-ray binary pulsar, LS V $+$ 44 17/ RX J0440.9 $+$ 4431, and the discovery of an absorption…”
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MAXI GSC Observations of a Spectral State Transition in the Black Hole Candidate XTE J1752–223 by Nakahira, Satoshi, Yamaoka, Kazutaka, Sugizaki, Mutsumi, Ueda, Yoshihiro, Negoro, Hitoshi, Ebisawa, Ken, Kawai, Nobuyuki, Matsuoka, Masaru, Tsunemi, Hiroshi, Daikyuji, Arata, Eguchi, Satoshi, Hiroi, Kazuo, Ishikawa, Ryoji, Ishiwata, Masaki, Isobe, Naoki, Kawasaki, Kazuyoshi, Kimura, Masashi, Kohama, Mitsuhiro, Mihara, Tatehiro, Miyoshi, Sho, Morii, Mikio, Nakagawa, Yujin E., Nakajima, Motoki, Ozawa, Hiroshi, Sootome, Tetsuya, Sugimori, Kousuke, Suzuki, Motoko, Tomida, Hiroshi, Ueno, Shiro, Yamamoto, Takayuki, Yoshida, Atsumasa

“…We present the first results on the black-hole candidate XTE J1752 $-$ 223 from the Gas Slit Camera (GSC) aboard the Monitor of All-sky X-ray Image (MAXI) on…”
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MAXI GSC Monitoring of the Crab Nebula and Pulsar during the GeV Gamma-Ray Flare in 2010 September by Morii, Mikio, Sugizaki, Mutsumi, Kawai, Nobuyuki, Serino, Motoko, Yamamoto, Takayuki, Usui, Ryuichi, Daikyuji, Arata, Ebisawa, Ken, Eguchi, Satoshi, Hiroi, Kazuo, Ishikawa, Masaki, Isobe, Naoki, Kawasaki, Kazuyoshi, Kimura, Masashi, Kitayama, Hiroki, Kohama, Mitsuhiro, Matsumura, Takanori, Matsuoka, Masaru, Mihara, Tatehiro, Nakagawa, Yujin E., Nakahira, Satoshi, Nakajima, Motoki, Negoro, Hitoshi, Ozawa, Hiroshi, Shidatsu, Megumi, Sootome, Tetsuya, Sugimori, Kousuke, Suwa, Fumitoshi, Tomida, Hiroshi, Tsuboi, Yohko, Tsunemi, Hiroshi, Ueda, Yoshihiro, Ueno, Shiro, Uzawa, Akiko, Yamaoka, Kazutaka, Yamazaki, Kyohei, Yoshida, Atsumasa

“…We report on the MAXI GSC X-ray monitoring of the Crab nebula and pulsar during the GeV gamma-ray flare for the period of 2010 September 18–24 (MJD 55457 $-$…”
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A Large X-Ray Flare from a Single Weak-Lined T Tauri Star TWA-7 Detected with MAXI GSC by Uzawa, Akiko, Tsuboi, Yohko, Morii, Mikio, Yamazaki, Kyohei, Kawai, Nobuyuki, Matsuoka, Masaru, Nakahira, Satoshi, Serino, Motoko, Matsumura, Takanori, Mihara, Tatehiro, Tomida, Hiroshi, Ueda, Yoshihiro, Sugizaki, Mutsumi, Ueno, Shiro, Daikyuji, Arata, Ebisawa, Ken, Eguchi, Satoshi, Hiroi, Kazuo, Ishikawa, Masaki, Isobe, Naoki, Kawasaki, Kazuyoshi, Kimura, Masashi, Kitayama, Hiroki, Kohama, Mitsuhiro, Kotani, Taro, Nakagawa, Yujin E., Nakajima, Motoki, Negoro, Hitoshi, Ozawa, Hiroshi, Shidatsu, Megumi, Sootome, Tetsuya, Sugimori, Kousuke, Suwa, Fumitoshi, Tsunemi, Hiroshi, Usui, Ryuichi, Yamamoto, Takayuki, Yamaoka, Kazutaka, Yoshida, Atsumasa

“…We present a large X-ray flare from a nearby weak-lined T Tauri star TWA-7 detected with the Gas Slit Camera (GSC) on the Monitor of All-sky X-ray Image…”
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Spectroscopic Observations of the WZ Sge-Type Dwarf Nova GW Librae during its 2007 Superoutburst by Hiroi, Kazuo, Nogami, Daisaku, Ueda, Yoshihiro, Moritani, Yuuki, Soejima, Yuichi, Imada, Akira, Hashimoto, Osamu, Kinugasa, Kenzo, Honda, Satoshi, Narusawa, Shin-ya, Sakamoto, Makoto, Iizuka, Ryo, Matsuda, Kentaro, Naito, Hiroyuki, Iijima, Takashi, Fujii, Mitsugu

“…We carried out an international spectroscopic observation campaign of the dwarf nova GW Librae (GW Lib) during its 2007 superoutburst. Our observation period…”
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Peculiarly Narrow SED of GRB 090926B with MAXI and Fermi/GBM by Serino, Motoko, Yoshida, Atsumasa, Kawai, Nobuyuki, Nakagawa, Yujin E., Mihara, Tatehiro, Ueda, Yoshihiro, Nakahira, Satoshi, Eguchi, Satoshi, Hiroi, Kazuo, Ishikawa, Masaki, Isobe, Naoki, Kimura, Masashi, Kitayama, Hiroki, Kohama, Mitsuhiro, Matsumura, Takanori, Matsuoka, Masaru, Morii, Mikio, Nakajima, Motoki, Negoro, Hitoshi, Shidatsu, Megumi, Sootome, Tetsuya, Sugimori, Kousuke, Sugizaki, Mutsumi, Suwa, Fumitoshi, Toizumi, Takahiro, Tomida, Hiroshi, Tsuboi, Yohko, Tsunemi, Hiroshi, Ueno, Shiro, Usui, Ryuichi, Yamamoto, Takayuki, Yamaoka, Kazutaka, Yamauchi, Makoto, Yamazaki, Kyohei

“…The monitor of the all-sky X-ray image (MAXI) Gas Slit Camera (GSC) on the International Space Station (ISS) detected a gamma-ray burst (GRB) on 2009,…”
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COMOVING SPACE DENSITY AND OBSCURED FRACTION OF HIGH-REDSHIFT ACTIVE GALACTIC NUCLEI IN THE SUBARU/XMM-NEWTON DEEP SURVEY by HIROI, Kazuo, UEDA, Yoshihiro, AKIYAMA, Masayuki, WATSON, Mike G

“…We study the comoving space density of X-ray-selected luminous active galactic nuclei (AGNs) and the obscured AGN fraction at high redshifts (3 < z < 5) in the…”
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Large X-ray flares on stars detected with MAXI/GSC: A universal correlation between the duration of a flare and its X-ray luminosity by Tsuboi, Yohko, Yamazaki, Kyohei, Sugawara, Yasuharu, Kawagoe, Atsushi, Kaneto, Soichiro, Iizuka, Ryo, Matsumura, Takanori, Nakahira, Satoshi, Higa, Masaya, Matsuoka, Masaru, Sugizaki, Mutsumi, Ueda, Yoshihiro, Kawai, Nobuyuki, Morii, Mikio, Serino, Motoko, Mihara, Tatehiro, Tomida, Hiroshi, Ueno, Shiro, Negoro, Hitoshi, Daikyuji, Arata, Ebisawa, Ken, Eguchi, Satoshi, Hiroi, Kazuo, Ishikawa, Masaki, Isobe, Naoki, Kawasaki, Kazuyoshi, Kimura, Masashi, Kitayama, Hiroki, Kohama, Mitsuhiro, Kotani, Taro, Nakagawa, Yujin E., Nakajima, Motoki, Ozawa, Hiroshi, Shidatsu, Megumi, Sootome, Tetsuya, Sugimori, Kousuke, Suwa, Fumitoshi, Tsunemi, Hiroshi, Usui, Ryuichi, Yamamoto, Takayuki, Yamaoka, Kazutaka, Yoshida, Atsumasa

“…Abstract Twenty-three giant flares from thirteen active stars (eight RS CVn systems, one Algol system, three dMe stars, and one young stellar object) were…”
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Bright X-Ray Flares from the BL Lac Object Markarian 421, Detected with MAXI in 2010 January and February by Isobe, Naoki, Sugimori, Kousuke, Kawai, Nobuyuki, Ueda, Yoshihiro, Negoro, Hitoshi, Sugizaki, Mutsumi, Matsuoka, Masaru, Daikyuji, Arata, Eguchi, Satoshi, Hiroi, Kazuo, Ishikawa, Masaki, Ishiwata, Ryoji, Kawasaki, Kazuyoshi, Kimura, Masashi, Kohama, Mitsuhiro, Mihara, Tatehiro, Miyoshi, Sho, Morii, Mikio, Nakagawa, Yujin E., Nakahira, Satoshi, Nakajima, Motoki, Ozawa, Hiroshi, Sootome, Tetsuya, Suzuki, Motoko, Tomida, Hiroshi, Tsunemi, Hiroshi, Ueno, Shiro, Yamamoto, Takayuki, Yamaoka, Kazutaka, Yoshida, Atsumasa

“…Strong X-ray flares from the blazar Mrk 421 were detected in 2010 January and February through 7-month monitoring with the MAXI GSC. The maximum 2–10 keV flux…”
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A Spectral Study of the Black Hole Candidate XTE J1752−223 in the High/Soft State with MAXI, Suzaku, and Swift by Nakahira, Satoshi, Koyama, Shu, Ueda, Yoshihiro, Yamaoka, Kazutaka, Sugizaki, Mutsumi, Mihara, Tatehiro, Matsuoka, Masaru, Yoshida, Atsumasa, Makishima, Kazuo, Ebisawa, Ken, Kubota, Aya, Yamada, Shin'ya, Negoro, Hitoshi, Hiroi, Kazuo, Ishikawa, Masaki, Kawai, Nobuyuki, Kimura, Masashi, Kitayama, Hiroki, Kohama, Mitsuhiro, Matsumura, Takanori, Morii, Mikio, Nakajima, Motoki, Serino, Motoko, Shidatsu, Megumi, Sootome, Tetsuya, Sugimori, Kousuke, Suwa, Fumitoshi, Tomida, Hiroshi, Tsuboi, Yoko, Tsunemi, Hiroshi, Ueno, Shiro, Usui, Ryuichi, Yamamoto, Takayuki, Yamazaki, Kyohei, Tashiro, Makoto S., Terada, Yukikatsu, Seta, Hiromi

“…We report on an X-ray spectral analysis of the black hole candidate XTE J1752 $-$ 223 in the 2009–2010 outburst, utilizing data obtained with the MAXI/Gas Slit…”
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Comoving Space Density and Obscured Fraction of High-Redshift Active Galactic Nuclei in the Subaru/{\it XMM-Newton} Deep Survey by Hiroi, Kazuo, Ueda, Yoshihiro, Akiyama, Masayuki, Watson, Mike G

“…We study the comoving space density of X-ray-selected luminous active galactic nuclei (AGNs) and the obscured AGN fraction at high redshifts ($3 < z < 5$) in…”
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Large X-ray Flares on Stars Detected with MAXI/GSC: A Universal Correlation between the Duration of a Flare and its X-ray Luminosity by Tsuboi, Yohko, Yamazaki, Kyohei, Sugawara, Yasuharu, Kawagoe, Atsushi, Kaneto, Soichiro, Iizuka, Ryo, Matsumura, Takanori, Nakahira, Satoshi, Higa, Masaya, Matsuoka, Masaru, Sugizaki, Mutsumi, Ueda, Yoshihiro, Kawai, Nobuyuki, Morii, Mikio, Serino, Motoko, Mihara, Tatehiro, Tomida, Hiroshi, Ueno, Shiro, Negoro, Hitoshi, Daikyuji, Arata, Ebisawa, Ken, Eguchi, Satoshi, Hiroi, Kazuo, Ishikawa, Masaki, Isobe, Naoki, Kawasaki, Kazuyoshi, Kimura, Masashi, Kitayama, Hiroki, Kohama, Mitsuhiro, Kotani, Taro, Nakagawa, Yujin E, Nakajima, Motoki, Ozawa, Hiroshi, Shidatsu, Megumi, Sootome, Tetsuya, Sugimori, Kousuke, Suwa, Fumitoshi, Tsunemi, Hiroshi, Usui, Ryuichi, Yamamoto, Takayuki, Yamaoka, Kazutaka, Yoshida, Atsumasa

“…23 giant flares from 13 active stars (eight RS CVn systems, one Algol system, three dMe stars and one YSO) were detected during the first two years of our…”
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Spectral Evolution of a New X-ray Transient MAXI J0556-332 Observed by MAXI, Swift, and RXTE by Sugizaki, Mutsumi, Yamaoka, Kazutaka, Matsuoka, Masaru, Kennea, Jamie A, Mihara, Tatehiro, Hiroi, Kazuo, Ishikawa, Masaki, Isobe, Naoki, Kawai, Nobuyuki, Kimura, Masashi, Kitayama, Hiroki, Kohama, Mitsuhiro, Matsumura, Takanori, Morii, Mikio, Nakagawa, Yujin E, Nakahira, Satoshi, Nakajima, Motoki, Negoro, Hitoshi, Serino, Motoko, Shidatsu, Megumi, Sootome, Tetsuya, Sugimori, Kousuke, Suwa, Fumitoshi, Toizumi, Takahiro, Tomida, Hiroshi, Tsuboi, Yoko, Tsunemi, Hiroshi, Ueda, Yoshihiro, Ueno, Shiro, Usui, Ryuichi, Yamamoto, Takayuki, Yamauchi, Makoto, Yamazaki, Kyohei, Yoshida, Atsumasa

“…We report on the spectral evolution of a new X-ray transient, MAXI J0556-332, observed by MAXI, Swift, and RXTE. The source was discovered on 2011 January 11…”
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The 37-month MAXI/GSC source catalog in the high Galactic-latitude sky by Hiroi, Kazuo, Ueda, Yoshihiro, Hayashida, Masaaki, Shidatsu, Megumi, Sato, Ryosuke, Kawamuro, Taiki, Sugizaki, Mutsumi, Nakahira, Satoshi, Serino, Motoko, Kawai, Nobuyuki, Matsuoka, Masaru, Mihara, Tatehiro, Morii, Mikio, Nakajima, Motoki, Negoro, Hitoshi, Sakamoto, Takanori, Tomida, Hiroshi, Tsuboi, Yohko, Tsunemi, Hiroshi, Ueno, Shiro, Yamaoka, Kazutaka, Yoshida, Atsumasa, Asada, Masato, Eguchi, Satoshi, Hanayama, Takanori, Higa, Masaya, Ishikawa, Kazuto, Ishikawa, Masaki, Isobe, Naoki, Kohama, Mitsuhiro, Kimura, Masashi, Morihana, Kumiko, Nakagawa, Yujin E, Nakano, Yuki, Nishimura, Yasunori, Ogawa, Yuji, Sasaki, Masayuki, Sugimoto, Juri, Takagi, Toshihiro, Usui, Ryuichi, Yamamoto, Takayuki, Yamauchi, Makoto, Yoshidome, Koshiro

“…We present the catalog of high Galactic-latitude ($|b|>10^{\circ}$) X-ray sources detected in the first 37-month data of Monitor of All-sky X-ray Image (MAXI)…”
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Outburst of LS V+44 17 Observed by MAXI and RXTE, and Discovery of a Dip Structure in the Pulse Profile by Usui, Ryuichi, Morii, Mikio, Kawai, Nobuyuki, Yamamoto, Takayuki, Mihara, Tatehiro, Sugizaki, Mutsumi, Matsuoka, Masaru, Hiroi, Kazuo, Ishikawa, Masaki, Isobe, Naoki, Kimura, Masashi, Kitayama, Hiroki, Kohama, Mitsuhiro, Matsumura, Takanori, Nakahira, Satoshi, Nakajima, Motoki, Negoro, Hitoshi, Serino, Motoko, Shidatsu, Megumi, Sootome, Tetsuya, Sugimori, Kousuke, Suwa, Fumitoshi, Toizumi, Takahiro, Tomida, Hiroshi, Tsuboi, Yoko, Tsunemi, Hiroshi, Ueda, Yoshihiro, Ueno, Shiro, Yamaoka, Kazutaka, Yamazaki, Kyohei, Yoshida, Atsumasa

“…We report on the first observation of an X-ray outburst of a Be/X-ray binary pulsar LS V +44 17/RX J0440.9+4431, and the discovery of an absorption dip…”
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