| Project/Area Number |
20J12200
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Single-year Grants |
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| Section | 国内 |
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| Review Section |
Basic Section 16010:Astronomy-related
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| Research Institution | The University of Tokyo |
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Principal Investigator |
LIN Haoxiang 東京大学, 理学系研究科, 特別研究員(DC2)
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| Project Period (FY) |
2020-04-24 – 2022-03-31
|
| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2021: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2020: ¥900,000 (Direct Cost: ¥900,000)
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| Keywords | 連星中性子星合体 / 重力波 / 高速電波バースト / ガンマ線バースト |
|---|
| Outline of Research at the Start |
Non-thermal electromagnetic emission from collision of neutron stars has been observed subsequently after detection of gravitational waves. We will study the physical nature of non-thermal emission, and predict the detection prospect in the era of next generation facilities including CTA and SKA.
|
| Outline of Annual Research Achievements |
Binary neutron star (BNS) mergers were long predicted to be the most canonical multi-messenger events in the Universe, which was recently confirmed by the joint detection of gravitational waves GW170817 and a short gamma-ray burst (GRB). They are also potential progenitors of neutrinos, cosmic rays, as well as a new but mysterious transient --- fast radio burst (FRB). These discoveries open the era of multi-messenger astronomy, and hence a formal formulation to estimate the joint effects on detection rate, constraint and Malmquist bias from different messengers is high in demand for future observations.
This research modeled the radiative process of non-thermal messengers from BNS mergers and systematically developed a general framework to evaluate their joint detection rates, population distributions and Malmquist biases with gravitational waves based on a statistical formulation. Using the developed methods, the following topics were studied via statistical simulation: (1) detectability of radio afterglows from BNS mergers and implications for the origin of FRBs; (2) the use of Canadian Hydrogen Intensity Mapping Experiment (CHIME) to detect radio afterglows from BNS mergers and short GRBs; (3) prospects of observing very-high-energy gamma-rays from BNS mergers by the Cherenkov Telescope Array (CTA).
These results represent some major prospects of multi-messenger detectability of BNS mergers and are expected to serve as reference for future observations.
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| Research Progress Status |
令和3年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
令和3年度が最終年度であるため、記入しない。
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