| Project/Area Number |
11440074
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
素粒子・核・宇宙線
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| Research Institution | Saitama University (2000-2001)
The University of Tokyo (1999) |
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Principal Investigator |
TASHIRO Makoto Science, Physics, Saitama University, Associate Professor, 理学部, 助教授 (00251398)
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| Co-Investigator(Kenkyū-buntansha) |
MAKISHIMA Kazuo University of Tokyo, Science, Professor, 大学院・理学系研究科, 教授 (20126163)
FUKAZAWA Yasushi Hiroshima University, Science, Associate Professor, 大学院・理学研究科, 助教授 (60272457)
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| Project Period (FY) |
1999 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥13,500,000 (Direct Cost: ¥13,500,000)
Fiscal Year 2001: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 2000: ¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 1999: ¥7,800,000 (Direct Cost: ¥7,800,000)
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| Keywords | Cosmic X-ray / Active Galaxy / Cluster of Galaxies / Cosmic Jet / Radio Lobe / Magnetic Field / Relativity / Particle Acceleration |
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| Research Abstract |
This study consists of X-ray observational study of active galactic nuclei, radio lobes, groups/clusters of galaxies, and developments of hard X-ray observation instruments. Issues are summarized below.
(1) Observational study of energy distributions probing with radio lobes : By measuring inverse-Compton X-rays from radio lobes, we showed that electron energy dominates magnetic field in most of radio lobes, and derived magnetic field structures in the lobes (e.g. Tashiro et al., 2001, ApJ 546, L19).
(2) Detection of hard X-ray emission from group of galaxies : With X-ray astronomical satellite ASCA, we discovered a diffuse hard X-ray excess emission from the group of galaxy HGC 62. The results suggest particle accelerations in the inter-galactic space in the group of galaxies (Fukazawa et al., 2001, ApJ 546, L87)
(3) Development of the Hard X-ray Detector onboard ASTRO-E/E2 : We developed the hard X-ray detector onboard ASTRO-E/E2 satellite. Design, production, and calibrations are carried out and the performance is reported by Tashiro et al. (IEEE TNS, 2002)
(4) Development of hard X-ray detectors for the next generations : We carried out development study of hard X-ray instruments, including scintillators with position sensitive phototubes, and CdTe semiconductors.
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