Soft equations of state for neutron-star matter ruled out by EXO 0748-676

被引：304

作者：

Ozel, F. ^{[1
]}

机构：

[1] Univ Arizona, Dept Phys, Tucson, AZ 85704 USA

来源：

NATURE | 2006年 / 441卷 / 7097期

关键词：

D O I：

10.1038/nature04858

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The interiors of neutron stars contain matter at very high densities, in a state that differs greatly from those found in the early Universe or achieved in terrestrial experiments(1). Matter in these conditions can only be probed through astrophysical observations that measure the mass and radius of neutron stars with sufficient precision(2). Here I report a determination of the mass and radius of the neutron star EXO 0748-676 that appears to rule out all the soft equations of state of neutron-star matter. If this object is typical, then condensates(2) and unconfined quarks(1) do not exist in the centres of neutron stars.

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页码：1115 / 1117

页数：3

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