| 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)
|
|---|
| 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.
|
