| 研究課題/領域番号 |
18H03698
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| 研究種目 |
基盤研究(A)
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| 配分区分 | 補助金 |
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| 応募区分 | 一般 |
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| 審査区分 |
中区分15:素粒子、原子核、宇宙物理学およびその関連分野
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| 研究機関 | 東京大学 |
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研究代表者 |
カンノン キップ 東京大学, 大学院理学系研究科(理学部), 教授 (50777886)
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| 研究期間 (年度) |
2018-04-01 – 2023-03-31
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| 研究課題ステータス |
交付 (2022年度)
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| 配分額 *注記 |
42,380千円 (直接経費: 32,600千円、間接経費: 9,780千円)
2022年度: 9,230千円 (直接経費: 7,100千円、間接経費: 2,130千円)
2021年度: 9,620千円 (直接経費: 7,400千円、間接経費: 2,220千円)
2020年度: 9,360千円 (直接経費: 7,200千円、間接経費: 2,160千円)
2019年度: 9,100千円 (直接経費: 7,000千円、間接経費: 2,100千円)
2018年度: 5,070千円 (直接経費: 3,900千円、間接経費: 1,170千円)
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| キーワード | gravitational wave / black hole / neutron star / LIGO / signal analysis / time series analysis / statistical inference / Virgo / astrophysics / data analysis / detection / gravitational waves / transient astronomy |
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| 研究実績の概要 |
Group members completed their contributions to LIGO and Virgo's O3 science run, and published their results. Group members participated in LIGO/Virgo collaboration meetings, and scientific conferences in Japan. Specifically the following objectives were achieved or partially achieved: 1. Modified the GstLAL gravitational-wave detection software to run on KAGRA computer systems in Japan. 2. An effort to improve the computational efficiency of the GstLAL detection software by developing algorithms for hierarchical cuts developed and tested several approaches, but not were found to be acceptable. 3. We completed and deployed a numerical model of the sensitivity and selection biases of the GstLAL GW detection system, removing the need to measure these using simulations. 4. We conducted a search for bursts of gravitational Cherenkov radiation.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
Almost all projects were completed as intended. The most significant project to not be completed was the effort to introduce hierarchical data selection cuts into the GstLAL gravitational-wave signal detection software for the purpose of reducing its computational cost. Although no satisfactory algorithm was found to achieve this, many lessons were learned from the effort and we expect that a renewed effort will be successful in the future.
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| 今後の研究の推進方策 |
New Master's students joined the group whose interests will take us in new directions. We are beginning to study how observations of gravitational waves from neutron star collisions can be used to measure the properties of dense nuclear matter. We are investigating generalizations of signal models for gravitational waves from compact object collisions that can be used to test such signals for consistency with General Relativity.
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