Balloon-borne hard X-ray polarization measurement and development of high-sensitivity focal-plane polarimeter in Swenden

2016 Fiscal Year Final Research Report

• Project/Area Number: 25302003
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 海外学術
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Hiroshima University
• Principal Investigator: Takahashi Hiromitsu 広島大学, 理学(系)研究科(研究院), 助教 (10536775)
• Co-Investigator(Renkei-kenkyūsha): MIZUNO Tsunefumi 広島大学, 宇宙科学センター, 准教授 (20403579) ; FUKAZAWA Yasushi 広島大学, 大学院理学研究科, 教授 (60272457) ; TAJIMA Hiroyasu 名古屋大学, 太陽地球環境研究所, 教授 (80222107)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 宇宙物理 / 偏光観測 / 気球実験 / シンチレータ結晶 / 光検出器

Outline of Final Research Achievements

We launched the balloon-borne hard X-ray polarimeter, Polarized Gamma-ray Observer, from Sweden in 2013 (PoGOLite) and 2016 (PoGO+). Following the successful launches, there were several days~1 week polarization observations of a pulsar-wind nebula, Crab nebula and a black-hole binary, Cygnus X-1.
For the future small polarimeter as a focal-plane detector, we developed and investigated the performance of scintillators with a photo-detector (Si-PM) readout.

Free Research Field

X線ガンマ線宇宙物理学