| Co-Investigator(Kenkyū-buntansha) |
DOTANI Takayasu ISAS : Assistant, 助手 (30211410)
ISHIDA Manabu ISAS : Assistant, 助手 (20249931)
KII Tsuneo ISAS : Assistant, 助手 (70183788)
ITOH Masayuki ISAS : Assistant, 助手 (40213087)
MATSUOKA Masaru The Inst.Phys.& Chem.Research : Cheif Scientist, 主任研究員 (30013668)
SHIBAZAKI Noriaki Rikkyo Univ. : Assistant Prof., 理, 助教授 (50206124)
OHASHI Takaya Tokyo Metro.Univ. : Assis.Prof., 理, 助教授 (70183027)
KUNIEDA Hideyo Nagoya Univ. : Assistant Professor, 理, 助教授 (00126856)
TAWARA Yujuru Nagoya Univ. : Assistant, 理, 助手 (10135296)
KITAMOTO Shunji Osaka Univ. : Assistant, 理, 助手 (70177872)
MIHARA Tatehiro The Inst.Phsy.& Chem.Research : Scientisit, 研究員補 (20260200)
TANAKA Yasuo ISAS, 名誉教授 (10022534)
CANIZARES C. MIT : Professor, 教授
RICKER G. MIT : Professor, 教授
TSURU Takeshi Kyoto Univ. : Assistant, 理, 助手 (10243007)
AWAKI Hisamitsu Kyoto Univ. : Assistant, 理, 助手 (30252414)
KAWAI Nobuyuki The Inst.Phsy.& Chem.Research : Scientist, 研究員 (80195031)
YOSHIDA Atsumasa The Inst.Phys.& Chemi.Research : Scientist, 研究員 (80240274)
SERLEMITSOS P. NASA/GSFC : Scientist, 研究員
HAYASHIDA Kiyoshi Osaka Univ. : Assistant, 理, 助手 (30222227)
BREON S. NASA/GSFC : Scientist, 研究員
EBISAWA Ken NASA/GSFC : Scientist, 研究員
VOLZ S.v. NASA/GSFC : Scientist, 研究員
KELLEY R. NASA/GSFC : Scientist, 研究員
HELFAND D. Columbia Univ. : Professor, 教授
MCCAMMON Wsiconsin Univ. : Professor, 教授
TSUNEMI Hiroshi Osaka Univ. : Assistant Professor, 理, 助教授 (90116062)
MAKISHIMA Kazuo Univ.of Tokyo : Assistant Professor, 理, 助教授 (20126163)
MITSUDA Kazuhisa ISAS : Assistant Professor, 助教授 (80183961)
MURAKAMI Toshiaki ISAS : Assistant Professor, 助教授 (60092350)
KOYAMA Katsuji Kyoto Univ. : Professor, 理, 教授 (10092206)
YAMASHITA Koujun Nagoya Univ. : Professor, 理, 教授 (80022622)
OGAWARA Yoshiaki ISAS : Professor, 教授 (80013671)
MIYAMOTO Shigenori Osaka Univ. : Professor, 理, 教授 (70013638)
MUSHOTZKY R. NASA/GSFC : Scientist, 研究員
MAKINO Fumiyashi ISAS : Professor, 教授 (60022589)
HOLT S. NASA/GSFC : Cheif Scientist, 主任研究員
INOUE Hajime ISAS : Professor, 教授 (40092142)
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| Research Abstract |
ASCA (ASTRO-D), the fourth X-ray astronomy satellite of ISAS,was successfully launched on February 20,1993. It carries nested thin-foil X-ray mirrors providing a large effective area over a wide energy range from 0.5 to 10keV.A set of CCD cameras and imaging gas scintillation proportional counters are placed on the focal plane. ASCA is a high-throughput imaging and spectroscopic X-ray observatory with these instruments.
An extensive collaboration between Japanese and U.S.scientists has been carried out in the joint developments of the X-ray telescopes, the X-ray CCD cameras, and computer software. It is continuing in the maintenance and the in-flight calibration of the instruments, and also in the data analysis and the following scientific activities.
ASCA is an X-ray astronomy observatory which is, for the first time, capable of performing imaging and spectroscopic observations simultaneously over a wide energy range 0.5-10keV.The ASCA instruments cover the most important energy band for plasma diagnostics, because all the K-lines and the K-absorption edges from oxygen through iron at various ionization stages lie within this band. The CCD camera of ASCA can resolve all major lines individually. Motion of plasma of the order or greater than 1000km/s can be measured significantly from Doppler shift of the line energies. These capabilities of ASCA allow diagnostics of accreting matter around such compact objects as neutron stars and black holes. Spatially-resolved spectroscopy with ASCA also provides powerful means for the investigations of extended plasmas in supernova remnants, galaxies, and clusters of galaxies.
The key elements of ASCA are succesfully working in orbit. ASCA has already obtained several remarkable scientific results. Most of them are due to the Japan-US collaboration with the help of this International Scientific Research Program as A Grant-in Aid for Scientific Research.
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