期刊
PHYSICAL REVIEW D
卷 92, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.92.064034
关键词
-
资金
- HPCI Strategic Program of Japanese MEXT/JSPS [hpci130025, 140211, 150225]
- RIKEN iTHES Research Project
- [24244028]
- [25103510]
- [25105508]
- [24740163]
- [26400267]
- [15H00783]
- [15H00836]
- [15K05077]
- [24103001]
- Grants-in-Aid for Scientific Research [26400267, 15H06857, 15H00782, 15H00783, 15H00836, 15K05077] Funding Source: KAKEN
We report results of a high resolution numerical-relativity simulation for the merger of black hole-magnetized neutron star binaries on Japanese supercomputer K. We focus on a binary that is subject to tidal disruption and subsequent formation of a massive accretion torus. We find the launch of thermally driven torus wind, subsequent formation of a funnel wall above the torus and a magnetosphere with collimated poloidal magnetic field, and high Blandford-Znajek luminosity. We show for the first time this picture in a self-consistent simulation. The turbulencelike motion induced by the nonaxisymmetric magnetorotational instability as well as the Kelvin-Helmholtz instability inside the accretion torus works as an agent to drive the mass accretion and converts the accretion energy to thermal energy, which results in the generation of a strong wind. By an in-depth resolution study, we reveal that high resolution is essential to draw such a picture. We also discuss the implication for the r-process nucleosynthesis, the radioactively powered transient emission, and short gamma ray bursts.
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