衰减磁场和r-模制动诱导的中子星化学加热研究

发布时间：2018-01-01 13:24

本文关键词：衰减磁场和r-模制动诱导的中子星化学加热研究　出处：《华中师范大学》2013年硕士论文　论文类型：学位论文

【摘要】：中子星是快速自转的,具有强磁场的致密天体。在这种形式下的中子星会不断通过磁偶极辐射释放转动能,使得星体转动角速度逐渐变小。进而压缩星体,导致口平衡破坏产生化学加热。这种存在于中子星内的加热机制可能使得中子星在年老时期仍处于较高的温度。第二章作为研究基础,充分讨论了中子星的物态方程及质量-半径关系。第三章讨论中子星热演化方程,以及化学加热机制。着重研究磁场衰减情况下,中子星制动、化学偏离以及化学能在中子星热演化过程中的释放。结果显示磁场衰减将使得中子星的制动效果在后期变得更加缓慢,中子星的温度在演化后期更低。第四章研究r-模制动诱导中子星的热演化行为。虽然r-模制动在早期效果非常显著,但由于早期中子星的温度很高,即使产生加热效应也不能体现出来。所以由于r-模制动诱导的化学加热效果在中子星演化晚期才会产生明显的区别,使得中子星的温度相对于偶极制动更低。
[Abstract]:Neutron stars are rapidly rotating, compact objects have a strong magnetic field. The neutron star in this form will continue through the magnetic dipole radiation release of rotational energy, causes the star angular velocity becomes smaller. Then the compact star, resulting in failure to produce chemical export balance heating. Heating mechanism of this kind exists in neutron stars may make neutron the star is still at a high temperature in the old time.
The second chapter, as the basis of the study, discusses the equation of the state of the neutron star and the relation of the mass - radius.
The third chapter discusses the thermal evolution of neutron stars equation and chemical heating mechanism. Focuses on the magnetic field attenuation case, neutron star brake, chemical drift and thermal evolution of neutron stars in chemical energy release in the process. The results show that the magnetic field attenuation will make the braking effect of the neutron star becomes more slowly in the later period, the temperature of the neutron stars in the late evolution lower.
The fourth chapter studies the thermal evolution behavior of r- induced braking of neutron stars. Although r- mode is very significant in the early braking effect, but due to the early neutron star temperature is very high, even if the heating effect is not reflected. So because of the chemical heating effect induced by r- mode brake neutron star at the advanced stage of evolution will have a significant difference the neutron star temperature relative to the dipole brake lower.

【学位授予单位】：华中师范大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P145.6

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