arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0810.3482astro-phnucl-th
收藏

用现代物态方程计算中子星结构

Computation of Neutron Star Structure Using Modern Equation of State

G. H. Bordbar, M. Hayati

摘要:

利用微观计算导出的现代物态方程,计算了中子星的结构。对于中子星,我们得到了$0.1 {\rm M_{\odot}}$附近的一个几乎与物态方程无关的最小质量,以及一个在$1.47 {\rm M_{\odot}}$和$1.98 {\rm M_{\odot}}$之间强烈依赖物态方程的最大质量。结果表明,在我们所用的中子星物质物态方程中,最硬的物态方程具有较大的最大质量和半径,而中心密度较小。结果表明,Reid-93状态方程的最大质量与射电望远镜的精确观测值有很好的一致性。我们已经指出,中子星地壳的厚度是非常小的预测相比,中子星半径。

英文摘要:

Using the modern equations of state derived from microscopic calculations, we have calculated the neutron star structure. For the neutron star, we have obtained a minimum mass about $0.1 {\rm M_{\odot}}$ which is nearly independent of the equation of state, and a maximum mass between $1.47 {\rm M_{\odot}}$ and $1.98 {\rm M_{\odot}}$ which is strongly dependent on the equation of state. It is shown that among the equations of state of neutron star matter which we have used, the stiffest one leads to higher maximum mass and radius and lower central density. It is seen that the given maximum mass for the Reid-93 equation of state shows a good consistency with the accurate observations of radio pulsars. We have indicated that the thickness of neutron star crust is very small compared to the predicted neutron star radius.

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。

↑