Possible explanation for star-crushing effect in binary neutron star simulations

被引：31

作者：

Flanagan, ÉÉ ^{[1
]}

机构：

[1] Cornell Univ, Newman Lab Nucl Studies, Ithaca, NY 14853 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 07期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.82.1354

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A possible explanation is suggested for the controversial star-crushing effect seen in numerical simulations of inspiraling neutron star binaries by Wilson, Mathews, and Marronetti (WMM). An apparently incorrect definition of momentum density in the momentum constraint equation used by WMM gives rise to a post-1-Newtonian error in the approximation scheme. We show by means of an analytic, post-1-Newtonian calculation that this error causes an increase of the stars' central densities which is of the order of several percent when the stars are separated by a few stellar radii, in agreement with what is seen in the simulations. [S0031-9007(99)08473-2].

引用

页码：1354 / 1357

页数：4

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