| Project/Area Number |
15K05018
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Astronomy
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
Totani Tomonori 東京大学, 大学院理学系研究科(理学部), 教授 (90321588)
|
|---|
| Project Period (FY) |
2015-04-01 – 2018-03-31
|
| Project Status |
Completed (Fiscal Year 2017)
|
| Budget Amount *help |
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
|
|---|
| Keywords | 高速電波バースト / ガンマ線バースト / 連星中性子星 / 宇宙再電離 / 突発天体 |
|---|
| Outline of Final Research Achievements |
We theoretically examined the possibility that fast radio bursts (FRBs) are produced by binary neutron star mergers. Using a numerical merger simulation, we found that ejecta is expelled a few ms after the merger, and there is a time window for a FRB radio signal to escape to an observer. On the other hand, following the discovery of a repeating FRB 121102, we proposed a scenario that a long-lived surviving neutron star after the merger becomes such a repeater FRB. As observational studies, we performed follow-up observations using Subaru Telescope for some FRBs. We found a host galaxy candidate for FRB 150418, and set the deepest optical upper limit of possible optical afterglow to FRB 151230.
|
