DYNAMICAL CAPTURE BINARY NEUTRON STAR MERGERS

被引：62

作者：

East, William E. ^{[1
]}

Pretorius, Frans ^{[1
]}

机构：

[1] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2012年 / 760卷 / 01期

基金：

美国国家科学基金会;

关键词：

black hole physics; gamma-ray burst: general; gravitation; gravitational waves; stars: neutron; GAMMA-RAY BURSTS; COMPACT OBJECT MERGERS; FOKKER-PLANCK MODELS; BLACK-HOLE; GRAVITATIONAL-WAVES; GLOBULAR-CLUSTERS; RADIATION; MECHANISM; EVOLUTION; EXOTICA;

D O I：

10.1088/2041-8205/760/1/L4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study dynamical capture binary neutron star mergers as may arise in dense stellar regions such as globular clusters. Using general-relativistic hydrodynamics, we find that these mergers can result in the prompt collapse to a black hole or in the formation of a hypermassive neutron star, depending not only on the neutron star equation of state but also on impact parameter. We also find that these mergers can produce accretion disks of up to a tenth of a solar mass and unbound ejected material of up to a few percent of a solar mass. We comment on the gravitational radiation and electromagnetic transients that these sources may produce.

引用

页数：6

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