1998 Fiscal Year Final Research Report Summary
X-ray Observations on Magnetic Fields around Active Galaxies
| Project/Area Number |
08454057
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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 | The University of Tokyo |
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Principal Investigator |
TASHIRO Makoto The University of Tokyo, Graduate School of Science, Physics, Research Associate, 大学院・理学系研究科, 助手 (00251398)
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| Co-Investigator(Kenkyū-buntansha) |
FUKAZAWA Yasushi The University of Tokyo, Graduate School of Science, Physics, Research Associate, 大学院・理学系研究科, 助手 (60272457)
MAKISHIMA Kazuo The University of Tokyo, Graduate School of Science, Physics, Professor, 大学院・理学系研究科, 教授 (20126163)
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| Project Period (FY) |
1996 – 1998
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| Keywords | X-ray astronomy / active galaxy / blazar objects / radio galaxy / cosmic jet / radio lobe / magnetic field / cluster of galaxies |
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| Research Abstract |
The project includes observational investigation on active galactic neuclei exhibiting cosmic jets and developments of hard X-ray detectors for future mission. Summary of the activities are shown below.
1. An X-ray observation of the radio galaxy Centaurus B were carried out and the results were published in the Astrophysical Journal (Tashiro et al., 1998, ApJ, 499, 713). This reports the second detection of inverse-Comptonized X-rays from the radio lobes, and shows the first evidence that the particle energy density dominates the energy density of magnetic fields in the radio lobes.
2. Follow up X-ray observation of the radio galaxy Fornax A were also carried out with the X-ray observatory ASCA and the results were reported in an international symposium. The results shows an incoincidence between the positions of the density peaks of electrons and magnetic field for the first time.
3. A review of the X-ray observations of radio lobes was presented in an international symposia (COSPAR scientific assembly E1.l and the 3rd ASCA symposium). Proceedings will be published in refereed journals.
4. Development and verifications of data processing system for the Hard X-ray Detector (HXD) onboard ASTRO-E was carried out. ASTRO-E will be launched in early 2000.
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