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arXiv 1003.1298nucl-thastro-ph.SRnucl-ex
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中子星物质状态方程的相对论模型

Relativistic models of the neutron-star matter equation of state

F. J. Fattoyev, J. Piekarewicz

摘要:

受最近天体物理测量核物质饱和密度以上的冷物质压力的启发,我们使用精确校准的相对论模型计算了中子星物质的状态方程。假设均匀的恒星核由处于β平衡的核子和轻子组成,不包括奇异的自由度。我们发现这些模型的预测是在相当好的协议与测量状态方程。然而,由这些相同模型预测的质量与半径关系显示的半径始终大于观测值。

英文摘要:

Motivated by a recent astrophysical measurement of the pressure of cold matter above nuclear-matter saturation density, we compute the equation of state of neutron star matter using accurately calibrated relativistic models. The uniform stellar core is assumed to consist of nucleons and leptons in beta equilibrium; no exotic degrees of freedom are included. We found the predictions of these models to be in fairly good agreement with the measured equation of state. Yet the Mass-vs-Radius relations predicted by these same models display radii that are consistently larger than the observations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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