| Project Area | Nuclear matter in neutron stars investigated by experiments and astronomical observations |
|---|
| Project/Area Number |
24105001
|
|---|
| 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 | Tohoku University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
高橋 俊行 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 准教授 (50281960)
村上 哲也 京都大学, 理学(系)研究科(研究院), 講師 (50219896)
中村 隆司 東京工業大学, 理工学研究科, 教授 (50272456)
堀越 宗一 東京大学, 理学(系)研究科(研究院), 助教 (00581787)
高橋 忠幸 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)
大西 明 京都大学, 基礎物理学研究所, 教授 (70250412)
玉川 徹 国立研究開発法人理化学研究所, その他部局等, その他 (20333312)
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
KOIKE Takeshi 東北大学, 大学院理学研究科, 准教授 (70396422)
MIWA Koji 東北大学, 大学院理学研究科, 助教 (50443982)
|
|---|
| Project Period (FY) |
2012-06-28 – 2017-03-31
|
| Project Status |
Completed (Fiscal Year 2016)
|
| Budget Amount *help |
¥46,540,000 (Direct Cost: ¥35,800,000、Indirect Cost: ¥10,740,000)
Fiscal Year 2016: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Fiscal Year 2015: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Fiscal Year 2014: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Fiscal Year 2013: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Fiscal Year 2012: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
|
|---|
| Keywords | 原子核物理 / 中性子星 / X線天文学 / 核物質 / 冷却原子 / ハイパー核 / 中性子過剰核 / 状態方程式 / ストレンジネス / 重イオン衝突実験 |
|---|
| Outline of Final Research Achievements |
We aimed at elucidating properties of neutron star matter by integrating laboratory experiments on the earth, astronomical observations, and theoretical studies. We have successfully determined the equation of state (EOS) of neutron matter at very low densities via experiments using ultracold atoms, obtained information on the neutron-rich nuclear matter EOS at medium and higher densities through structure studies of and collision experiments with neutron-rich nuclei at RIKEN RIBF, and uncovered via hypernuclear experiments at J-PARC the interactions of particles with strangeness which play crucial roles in building the EOS at high densities. Combining these experimental results with theoretical works on nuclear and astrophysics, we have improved the EOS and achieved better understanding of nuclear matter in neutron stars. We have also greatly improved technology of X-ray detectors for satellites, which will allow us to measure neutron star radii precisely and confirm the EOS.
|
