The Effects of Superhigh Magnetic Fields on Equations of States of Neutron Stars
The Effects of Superhigh Magnetic Fields on Equations of States of Neutron Stars
复制标题
超高磁场对中子星状态方程的影响
DOI:
10.1002/asna.201512239
复制
发表时间:
2015-08
期刊:
影响因子:
--
通讯作者:
X.-D. Li
中科院分区:
文献类型:
--
作者:
Z.F. Gao, N. Wang, Y. Xu, H. Shan,;X.-D. Li
By introducing Dirac ?-function in superhigh magnetic field, we deduce a general formula for pressure of degenerate and relativistic electrons, Pe, which is suitable for superhigh magnetic fields, discuss the quantization of Landau levels of electrons, and consider the quantum electrodynamic(QED) effects on the equations of states (EOSs) for different matter systems. The main conclusions are as follows: the stronger the magnetic field strength, the higher the electron pressure becomes; compared with a common radio pulsar, a magnetar could be a more compact oblate spheroid-like deformed neutron star due to the anisotropic total pressure; and an increase in the maximum mass of a magnetar is expected because of the positive contribution of the magnetic field energy to the EOS of the star. Since this is an original work in which some uncertainties could exist, to further modify and perfect our theory model should be considered in our future studies.
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