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arXiv 1402.3258gr-qcastro-ph.SR
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环形磁场作用下中子星的畸变

Distortion of neutron stars with a toroidal magnetic field

Joachim Frieben, Luciano Rezzolla

摘要:

本文计算了八个冷稠密物质状态方程样本的具有环形磁场的旋转相对论性恒星模型。非旋转模型承认重要水平的磁化和四极畸变伴随着一个看似无限的增长规模。旋转模型达到质量脱落的限制在较小的角速度比在非磁化的情况下,根据较大的圆周赤道半径诱导的磁场。此外,根据表面变形和四极畸变,它们可以分为长-长、扁-长、扁-扁。表面和四极形变的简单表达式提供了有效的磁场强度和快速旋转。

英文摘要:

Models of rotating relativistic stars with a toroidal magnetic field have been computed for a sample of eight equations of state of cold dense matter. Non-rotating models admit important levels of magnetization and quadrupole distortion accompanied by a seemingly unlimited growth in size. Rotating models reach the mass-shedding limit at smaller angular velocities than in the non-magnetized case according to the larger circumferential equatorial radius induced by the magnetic field. Moreover, they can be classified as prolate-prolate, oblate-prolate, or oblate-oblate with respect to surface deformation and quadrupole distortion. Simple expressions for surface and quadrupole deformation are provided that are valid up to magnetar field strengths and rapid rotation.

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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