Prompt Merger Collapse and the Maximum Mass of Neutron Stars

被引：218

作者：

Bauswein, A. ^{[1
,2
]}

Baumgarte, T. W. ^{[1
,3
]}

Janka, H. -T. ^{[1
]}

机构：

[1] Max Planck Inst Astrophys, D-85748 Garching, Germany

[2] Aristotle Univ Thessaloniki, Dept Phys, GR-54124 Thessaloniki, Greece

[3] Bowdoin Coll, Dept Phys & Astron, Brunswick, ME 04011 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 13期

基金：

美国国家科学基金会;

关键词：

EQUATION-OF-STATE; UNSTABLE NUCLEI; SUPERNOVA; NUCLEOSYNTHESIS; SIMULATIONS; PARAMETERS; ROTATION;

D O I：

10.1103/PhysRevLett.111.131101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We perform hydrodynamical simulations of neutron-star mergers for a large sample of temperature-dependent nuclear equations of state and determine the threshold mass above which the merger remnant promptly collapses to form a black hole. We find that, depending on the equation of state, the threshold mass is larger than the maximum mass of a nonrotating star in isolation by between 30 and 70 percent. Our simulations also show that the ratio between the threshold mass and maximum mass is tightly correlated with the compactness of the nonrotating maximum-mass configuration. We speculate on how this relation can be used to derive constraints on neutron-star properties from future observations.

引用

页数：5

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