A GENERAL RELATIVISTIC MODEL FOR SAX J1808.4-3658
A GENERAL RELATIVISTIC MODEL FOR SAX J1808.4-3658
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SAX J1808.4-3658的一般相对论模型
DOI：
10.1142/s0217732302007090
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
J. Dey
中科院分区：
文献类型：
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作者：
Ranjan Sharma;S. Mukherjee;M. Dey;J. Dey
我们利用Vaidya-Tikekar12的时空几何讨论了一类致密恒星模型的物理适用性。结果表明，该模型可以得到一个与前人对SAX J1808.4-3658(简称SAX)的状态方程非常相似的状态方程(EOS)。该模型所描述的恒星构型在径向扰动下是稳定的。这可能解释了为什么与其他低质量的双星X射线发射体相比，恒星SAX非常稳定。
We discuss the physical applicability of a model for a class of compact stars, employing Vaidya–Tikekar12 geometry of space–time. It is shown that the model can generate an equation of state (EOS) very similar to the one obtained by earlier workers for SAX J1808.4-3658 (SAX in short), assumed to be a strange star. The stellar configuration, as described by the model, is shown to be stable under radial perturbations. This may explain why the star SAX is known to be very stable compared to other low mass binary X-ray emitters.