Anisotropic mass ejection from black hole-neutron star binaries: Diversity of electromagnetic counterparts

被引：115
作者：
Kyutoku, Koutarou [1 ]
Ioka, Kunihito [2 ]
Shibata, Masaru [3 ]
机构：
[1] Univ Wisconsin, Dept Phys, Milwaukee, WI 53201 USA
[2] KEK, Inst Particles & Nucl Studies, Ctr Theory, Tsukuba, Ibaraki 3050801, Japan
[3] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan
来源：
PHYSICAL REVIEW D | 2013年 / 88卷 / 04期
关键词：
COSMIC-RAYS; MERGERS; ACCELERATION; SIGNALS; BURSTS;
D O I：
10.1103/PhysRevD.88.041503
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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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页数：6
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