| Project/Area Number |
22KF0250
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| Project/Area Number (Other) |
22F22750 (2022)
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Multi-year Fund (2023)
Single-year Grants (2022) |
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| Section | 外国 |
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| Review Section |
Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
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| Research Institution | Osaka University |
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Principal Investigator |
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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| Co-Investigator(Kenkyū-buntansha) |
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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| Project Period (FY) |
2023-03-08 – 2025-03-31
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| Project Status |
Granted (Fiscal Year 2023)
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| Budget Amount *help |
¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2024: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 2023: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2022: ¥300,000 (Direct Cost: ¥300,000)
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| Keywords | Neutron stars / Equations of state |
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| Outline of Research at the Start |
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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| Outline of Annual Research Achievements |
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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| Current Status of Research Progress |
Current Status of Research Progress
3: Progress in research has been slightly delayed.
Reason
We have almost completed the first part of the proposed project, which will soon lead to a publication.
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| Strategy for Future Research Activity |
The second main topic has been left partly aside. The fellow will concentrate more on that in the remaining months.
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