磁星与脉冲星Glitch现象物理本质的研究

项目名称： 磁星与脉冲星Glitch现象物理本质的研究

项目编号： No.11273020

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 张洁

作者单位： 西华师范大学

项目金额： 85万元

中文摘要： 最近我们的研究表明在强磁场下,当磁场增强时,电子的Fermi能随着磁场强的1/4次方升高，澄清了国际上某些统计物理教科书中一个严重错误导致的天体物理中某些混乱;在磁星的超强磁场下,由于电子的Fermi能随磁场的增强而升高将导致电子同质子结合转化为能量很高的中子，它们将摧毁各向异性中子超流体的3P2中子Cooper对,使得原有的3P2中子Cooper对的磁矩也消失，相应的有序磁能转化为无序的热能,由此产生磁星的反常x-射线光度。我们做了大量的前期工作，预期理论计算结果将同观测结果相当好的一致。此外，我们拟根据之前关于中子超流体3P2中子Cooper对的顺磁磁矩研究，重新计算3P2中子超流涡旋的磁偶极辐射，作为中子星加热的一种机制； "3P2中子超流体的A相与B相之间相振荡"模型可以揭示脉冲星Glitch的物理本质, 项目将在我们2006年提出的模型基础上进行改进.

中文关键词： 中子星；脉冲星；磁场；物理机制；

英文摘要： Our recent research shows that the Fermi Energy of electrons will increase with B**(1/4) in strong magnetic field(B). We have demonstrated a severe error on calculating microscopic state number of degenerate electrons under strong magnetic field in some classical textbook of statistical physics , which has made chaos in researches of nutron stars. Once the energies of electrons are higher than neutron Fermi energy, the process of electron capture(EC) will occur in a magnetar. The outgoing high-energy neutrons can easily destroy the Cooper pairs through the nuclear force interaction.When a Cooper pair is destroyed, the magnetic energy would be released and transformed into thermal energy, then can be radiated as soft X-rays. We have done many previous works and estimated that the theoretical luminosities of magnetars can fit with the observations of magnetars very well. Futhermore,considering our researched result on paramagnetic moment of 3P2 Cooper pairs of neutron superfluid, we plan to recalculate the radiation of magnetic dipole emmited by the 3P2 neutron superfluid vortices,which is one of the heating mechanism of neutron star; We propose a new physical model of pulsar glitches: phase oscillation between the phases both A and B of 3P2 neutron superfluid, improving the model proposed by us in 2006.

英文关键词： Neutron star；Pulsar；Magnetic field；Physical mechenism；