2016 Fiscal Year Final Research Report
New Development of Research on Neutron Stars by X- and Gamma-Rays Observatory
| Project Area | Nuclear matter in neutron stars investigated by experiments and astronomical observations |
|---|
| Project/Area Number |
24105007
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
|
| Allocation Type | Single-year Grants |
|---|
| Review Section |
Science and Engineering
|
|---|
| Research Institution | Japan Aerospace EXploration Agency |
|---|
Principal Investigator |
Takahashi Tadayuki 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 (50183851)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
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)
|
|---|
| Research Collaborator |
Done Chris
Khangulyan Dmitry
Odaka Hirokazu
Sato Goro
Enoto Teruaki
Saito Shinya
Hagino Koichi
|
|---|
| Project Period (FY) |
2012-06-28 – 2017-03-31
|
| Keywords | X線天文学 / 中性子星 / ガンマ線天文学 |
|---|
| 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.
|
| Free Research Field |
宇宙物理学実験
|
