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arXiv 1412.5347astro-ph.HEgr-qc
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电流分布在磁化中子星广义相对论平衡中的作用

The role of currents distribution in general relativistic equilibria of magnetized neutron stars

N. Bucciantini, A. G. Pili, L. Del Zanna

摘要:

磁场在中子星的现象学中起着至关重要的作用。实际上没有一个可观察的方面不受它们的支配。尽管如此,直到最近才努力在正确的广义相对论范围内模拟磁场,这是这些紧凑物体的特征。在这项工作中,我们提出,第一次全面和详细的参数研究,在广义相对论中,电流分布的作用,以及相关的磁场结构,在确定中子星的精确结构。特别是,我们展示了如何本地化的电流的存在下,可以修改在恒星表面的磁场强度,我们期待的一般趋势,无论是在充满活力的属性,和磁场配置。在这里,我们验证,除其他事项外,对于一大类不同的电流分布所产生的磁配置总是占主导地位的极向分量的电流。

英文摘要:

Magnetic fields play a critical role in the phenomenology of neutron stars. There is virtually no observable aspect which is not governed by them. Despite this, only recently efforts have been done to model magnetic fields in the correct general relativistic regime, characteristic of these compact objects. In this work we present, for the first time a comprehensive and detailed parameter study, in general relativity, of the role that the current distribution, and the related magnetic field structure, have in determining the precise structure of neutron stars. In particular, we show how the presence of localized currents can modify the field strength at the stellar surface, and we look for general trends, both in terms of energetic properties, and magnetic field configurations. Here we verify that, among other things, for a large class of different current distributions the resulting magnetic configurations are always dominated by the poloidal component of the current.

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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