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arXiv 0906.4223astro-ph.HEastro-ph.SR
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脉冲星磁层共振回旋散射及其对孤立中子星的应用

Resonant cyclotron scattering in pulsar magnetospheres and its application to isolated neutron stars

Hao Tong, Ren Xin Xu, Qiu He Peng, Li Ming Song

摘要:

研究了脉冲星磁层中的共振回旋散射。推导了RCS的光子扩散方程(Kompaneets方程)。光子系统是三维建模。数值计算表明,RCS不仅存在上散射,而且还存在下散射,这取决于参数空间。指出了RCS在候选磁星和射电宁静孤立中子星(INS)谱能量分布研究中的可能应用。惯性导航系统的光学/紫外过量可能是由RCS的下散射引起的。列出了RX J1856.5-3754和RX J0720.4-3125的计算结果,并与其观察数据进行了比较。在我们的模型中,INS被认为是正常的中子星,虽然夸克星假说仍然是可能的。INS的低脉动幅度是RCS模型中的自然结果。

英文摘要:

Resonant cyclotron scattering (RCS) in pulsar magnetospheres is considered. The photon diffusion equation (Kompaneets equation) for RCS is derived. The photon system is modeled three dimensionally. Numerical calculations show that there exist not only up scattering but also down scattering of RCS, depending on the parameter space. RCS's possible applications to the spectra energy distributions of magnetar candidates and radio quiet isolated neutron stars (INSs) are point out. The optical/UV excess of INSs may caused by the down scattering of RCS. The calculations for RX J1856.5-3754 and RX J0720.4-3125 are presented and compared with their observational data. In our model, the INSs are proposed to be normal neutron stars, although the quark star hypothesis is still possible. The low pulsation amplitude of INSs is a natural consequence in the RCS model.

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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