Understanding high-energy phenomena through multi-GeV gamma-ray observations with H.E.S.S.

2016 Fiscal Year Final Research Report

• Project/Area Number: 26247027
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Astronomy
• Research Institution: Rikkyo University
• Principal Investigator: UCHIYAMA Yasunobu 立教大学, 理学部, 教授 (00435801)
• Co-Investigator(Kenkyū-buntansha): 小高 裕和 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 研究員 (50610820)
• Co-Investigator(Renkei-kenkyūsha): TAKAHASHI Tadayuki 宇宙航空研究開発機構, 宇宙科学研究所, 教授 (50183851)
• Research Collaborator: KHANGULYAN Dmitry 立教大学, 先端科学計測研究センター, 研究員 ; AHARONIAN Felix マックスプランク核物理研究所, 教授 ; BERGE David アムステル大学, 准教授
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 宇宙線 / ガンマ線 / 超新星残骸 / パルサー星雲 / 衝撃波統計加速

Outline of Final Research Achievements

We have studied the acceleration mechanisms of high energy particles in various galactic objects such as supernova remnants, microquasars, pulser winds, by combining very-high-energy (VHE) gamma-ray observations with the atmospheric Cherenkov telescope H.E.S.S., gamma-ray observations by the Fermi satellite, and X-ray observations. We focused on observations of the supernova remnant RXJ 1713.7-3946 which is one of the strongest gamma-ray sources on the VHE gamma-ray sky, and discovered gamma rays extending beyond the X-ray shell. Also we have measured the expansion rate of the remnant, and performed the first hard X-ray imaging using NuSTAR.

Free Research Field

高エネルギー天文学