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arXiv 1207.0633astro-ph.SR
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脉冲星故障:地壳是不够的

Pulsar glitches: The crust is not enough

N. Andersson, K. Glampedakis, W. C. G. Ho, C. M. Espinoza

摘要:

脉冲星的故障传统上被认为是涡旋动力学的表现,与局限于恒星内部地壳的中子超流库有关。在这封信中,我们表明,非耗散夹带之间的中子超流体和核晶格耦合导致一个不太流动的地壳超流体,有效地减少了与角动量水库的转动惯量。结合最新的观测数据,多产的毛刺星与地壳卷吸的理论结果,我们发现,所需的超流水库超过了地壳中可用的。这挑战了我们对毛刺现象的理解,我们讨论了这个问题的可能解决方案。

英文摘要:

Pulsar glitches are traditionally viewed as a manifestation of vortex dynamics associated with a neutron superfluid reservoir confined to the inner crust of the star. In this Letter we show that the non-dissipative entrainment coupling between the neutron superfluid and the nuclear lattice leads to a less mobile crust superfluid, effectively reducing the moment of inertia associated with the angular momentum reservoir. Combining the latest observational data for prolific glitching pulsars with theoretical results for the crust entrainment we find that the required superfluid reservoir exceeds that available in the crust. This challenges our understanding of the glitch phenomenon, and we discuss possible resolutions to the problem.

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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