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arXiv 2202.01207gr-qcnucl-th
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各向异性磁化中子星

Anisotropic magnetized neutron star

Gholam Hossein Bordbar, Mohammad Karami

摘要:

我们知道,强磁场的作用会导致磁化致密体的各向异性。因此,本文研究了磁化中子星各向异性情况下的结构性质。本文导出了中子星物质在均匀和密度相关两种磁场下的物态方程。我们求解了推广的Tolman Oppenheimer Schwarzoff方程,研究了该系统的最大质量和相应的半径、Schwarzschild半径、引力红移、Kretschmann标量和Buchdahl定理。结果表明,中子星的最大质量和最大半径是磁场的增函数。此外,红移,引力强度和克雷奇曼标量增加的磁场增加。此外,还研究了各向异性中子星的动力学稳定性,并与实验结果进行了比较。

英文摘要:

As we know, the effect of strong magnetic field causes the anisotropy for the magnetized compact objects. Therefore, in this paper, we have studied the structure properties of anisotropic case of magnetized neutron star. We have derived the equation of state (EoS) of neutron star matter for two forms of magnetic fields, one uniform and one density dependent. We have solved the generalized Tolman Oppenheimer Volkoff equations to examine the maximum mass and corresponding radius, Schwarzschild radius, graviitational redshift, Kretschmann scalar, and Buchdahl theorem for this system. It was shown that the maximum mass and radius of neutron star are increasing functions of the magnetic field. Also redshift, strength of gravity, and Kretschmann scalar increase as the magnetic field increases. In addition, the dynamical stability of anisotrop neutron star has been investigated, and finally a comparison with the empirical results has been made.

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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