| 研究課題/領域番号 |
22KF0250
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| 補助金の研究課題番号 |
22F22750 (2022)
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| 研究種目 |
特別研究員奨励費
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| 配分区分 | 基金 (2023)
補助金 (2022) |
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| 応募区分 | 外国 |
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| 審査区分 |
小区分15010:素粒子、原子核、宇宙線および宇宙物理に関連する理論
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| 研究機関 | 大阪大学 |
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研究代表者 |
Baiotti Luca 大阪大学, インターナショナルカレッジ, 准教授 (00574047)
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| 研究分担者 |
HENSH SUDIPTA 大阪大学, 学内共同利用施設等, 外国人特別研究員
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| 研究期間 (年度) |
2023-03-08 – 2025-03-31
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| 研究課題ステータス |
交付 (2023年度)
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| 配分額 *注記 |
1,400千円 (直接経費: 1,400千円)
2024年度: 400千円 (直接経費: 400千円)
2023年度: 700千円 (直接経費: 700千円)
2022年度: 300千円 (直接経費: 300千円)
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| キーワード | Neutron stars / Equations of state |
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| 研究開始時の研究の概要 |
The behavior of matter (the "equation of state") at the highest densities, several times that of nuclei, is currently one of the open questions of science. Such high densities can be basically studied only in neutron stars. We will perform advanced numerical-relativity simulations of two neutron stars merging in a single, even more compact object and analyze the data for getting information about the equation of state.
We will also simulate neutrino emissions from these systems, in order to connect the details of binary neutron star mergers with the observations of gamma-ray-bursts.
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| 研究実績の概要 |
In the past academic year, we have performed, on two supercomputers at different locations, tens of simulations of binary neutron star mergers, with different equations of state. We have collected, cataloged, and analyzed the data, in order to extract relevant frequencies in the spectra and other quantities of physical and observational importance. This allowed us to draw interesting and new conclusions on how one may obtain information on the equation of state from gravitational wave data originated, in particular, after the merger of these systems.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
3: やや遅れている
理由
We have almost completed the first part of the proposed project, which will soon lead to a publication.
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| 今後の研究の推進方策 |
The second main topic has been left partly aside. The fellow will concentrate more on that in the remaining months.
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