Journal
PHYSICAL REVIEW D
Volume 88, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.88.041503
Keywords
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Funding
- Japanese MEXT [21684014, 22244030, 24000004, 24103006, 24740163]
- JSPS
- Grants-in-Aid for Scientific Research [22244030, 24103006, 24000004, 21684014, 24740163] Funding Source: KAKEN
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The merger of black hole-neutron star binaries can eject substantial material with the mass similar to 0.01-0.1M(circle dot) when the neutron star is disrupted prior to the merger. The ejecta shows significant anisotropy, and travels in a particular direction with the bulk velocity similar to 0.2c. This is drastically different from the binary neutron star merger, for which ejecta is nearly isotropic. Anisotropic ejecta brings electromagnetic-counterpart diversity which is unique to black hole-neutron star binaries, such as viewing-angle dependence, polarization, and proper motion. The kick velocity of the black hole, gravitational-wave memory emission, and cosmic-ray acceleration are also discussed.
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