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arXiv 1607.05092astro-ph.HE
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中子星内外核的微观涡旋速度

Microscopic Vortex Velocity in the Inner Crust and Outer Core of Neutron Stars

Erbil Gügercinoğlu, M. Ali Alpar

摘要:

处理中子星内部地壳和外核超流体中的涡旋运动是模拟脉冲星现象(包括毛刺和磁场演化)的关键因素。在重新计算了地壳内部的微观涡旋速度之后,我们首次估算了外核涡旋的速度。钉扎点之间的旋涡运动被发现是实质上更快的内地壳比在外核,$v_0^{\rm crust} \sim 10^{7}\mbox{\cms} \gg v_0^{\rm core} \sim 1\mbox{\cms}$。一个直接的结果是,涡蠕动总是在非线性制度的外核心相比,内地壳,在非线性和线性制度的涡蠕动是可能的。脉冲星毛刺和磁场演化的其他影响也提出。

英文摘要:

Treatment of the vortex motion in the superfluids of the inner crust and the outer core of neutron stars is a key ingredient in modeling a number of pulsar phenomena, including glitches and magnetic field evolution. After recalculating the microscopic vortex velocity in the inner crust, we evaluate the velocity for the vortices in the outer core for the first time. The vortex motion between pinning sites is found to be substantially faster in the inner crust than in the outer core, $v_0^{\rm crust} \sim 10^{7}\mbox{\cms} \gg v_0^{\rm core} \sim 1\mbox{\cms}$. One immediate result is that vortex creep is always in the nonlinear regime in the outer core in contrast to the inner crust, where both nonlinear and linear regimes of vortex creep are possible. Other implications for pulsar glitches and magnetic field evolution are also presented.

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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