辻本 匡弘 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, 助教 (10528178)
玉川 徹 国立研究開発法人理化学研究所, 玉川高エネルギー宇宙物理学研究室, 准主任研究員 (20333312)
堂谷 忠靖 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, 教授 (30211410)
内山 泰伸 立教大学, 理学部, 教授 (00435801)
|Budget Amount *help
¥183,300,000 (Direct Cost: ¥141,000,000、Indirect Cost: ¥42,300,000)
Fiscal Year 2016: ¥55,640,000 (Direct Cost: ¥42,800,000、Indirect Cost: ¥12,840,000)
Fiscal Year 2015: ¥30,550,000 (Direct Cost: ¥23,500,000、Indirect Cost: ¥7,050,000)
Fiscal Year 2014: ¥28,990,000 (Direct Cost: ¥22,300,000、Indirect Cost: ¥6,690,000)
Fiscal Year 2013: ¥30,030,000 (Direct Cost: ¥23,100,000、Indirect Cost: ¥6,930,000)
Fiscal Year 2012: ¥38,090,000 (Direct Cost: ¥29,300,000、Indirect Cost: ¥8,790,000)
|Outline of Final Research Achievements
In order to constrain the radius of neutron stars by using the ASTRO-H (Hitomi) satellite, we performed necessary improvements and tests for X-ray detectors onboard ASTRO-H. We succeeded in demonstrating the required performances, such as the energy resolution of 4.9 eV by Micro Calorimeter. We improved high counting capability of the data acquisition system, required for neutron star observations. Despite of the early termination of the satellite, we have succeeded in obtaining technology to measure the radius of neutron stars, precisely. This enables us to constrain the EOS of nuclear matter by future missions.
By using archival data, we detected characteristic structure in a spectrum during an X-ray burst and proposed a new method to estimate the gravitational redshift at the neutron star surface. We advanced development of new detectors for future X-ray and gamma-ray missions, such as a semiconductor sensor for high counting observation and a detector to measure X-ray polarization.