Is SAX J1808.4-3658 a Strange Star ?
Is SAX J1808.4-3658 a Strange Star ?
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DOI：
10.1103/physrevlett.83.3776
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发表时间：
1999-05
影响因子：
8.6
通讯作者：
Xiang-Dong Li;I. Bombaci;M. Dey;J. Dey;E. V. Heuvel
中科院分区：
文献类型：
--
作者：
Xiang-Dong Li;I. Bombaci;M. Dey;J. Dey;E. V. Heuvel
奇异恒星的可能性是致密天体研究中最重要的问题之一。在这里，我们使用新发现的毫秒x射线脉冲星SAX J1808.4-3658的观测来限制致密恒星的半径。将SAX J1808.4-3658的质量-半径关系与中子星和奇异星的理论模型进行了比较，认为奇异星模型可能与SAX J1808.4-3658更一致，是一种可能的奇异星候选。我们的结果对于约束奇异物质的量子色动力学(QCD)模型中的微观手征对称性恢复参数是有用的。
The possibility of strange stars is one of the most important issues in the study of compact objects. Here we use the observations of the newly discovered millisecond x-ray pulsar SAX J1808.4-3658 to constrain the radius of the compact star. Comparing the mass-radius relation of SAX J1808.4-3658 with theoretical models for both neutron stars and strange stars, we argue that a strange star model could be more consistent with SAX J1808.4-3658, and suggest that it is a likely strange star candidate. Our results are useful in constraining microscopic chiral symmetry restoration parameters in the quantum chromodynamics (QCD) modeling of strange matter.