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arXiv 0905.3368astro-ph.HEastro-ph.SR
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吸积毫秒双星中r模产生的磁场

Magnetic fields generated by r-modes in accreting millisecond pulsars

Carmine Cuofano, Alessandro Drago

摘要:

在旋转的中子星中,科里奥利力的存在允许所谓的罗斯比振荡(r模)的存在,已知这种振荡对引力波的发射是不稳定的。本文首次在r模演化方程中引入了磁阻尼率。我们发现,r-模可以产生非常强的环形场的核心吸积毫秒星系通过诱导差异旋转。我们简要地讨论了产生的磁场的不稳定性及其长时间尺度的演变,以澄清产生的磁场如何能够稳定的恒星。

英文摘要:

In rotating neutron stars the existence of the Coriolis force allows the presence of the so-called Rossby oscillations (r-modes) which are know to be unstable to emission of gravitational waves. Here, for the first time, we introduce the magnetic damping rate in the evolution equations of r-modes. We show that r-modes can generate very strong toroidal fields in the core of accreting millisecond pulsars by inducing differential rotation. We shortly discuss the instabilities of the generated magnetic field and its long time-scale evolution in order to clarify how the generated magnetic field can stabilize the star.

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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