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arXiv 1202.1667astro-ph.HE
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脉冲星风中的线偏振超光速波

Linearly polarized superluminal waves in pulsar winds

Ioanna Arka, John G. Kirk

摘要:

脉冲星风是研究非线性电磁波的理想环境。一般认为,脉冲星会发射一种条纹风,一种磁流体动力学熵波,其中等离子体片随气流一起分离交变磁场的区域。但是当密度下降到临界值以下,或者与脉冲星的距离大于临界半径时,强超光速波也可以传播。在这篇文章中,我们讨论了转换的赤道条纹风成线偏振超光速波,我们认为,这种模式是重要的坡印亭流量转换为动能流量前流出到达终止激波。

英文摘要:

Pulsar winds are the ideal environment for the study of non-linear electromagnetic waves. It is generally thought that a pulsar launches a striped wind, a magnetohydrodynamic entropy wave, where plasma sheets carried along with the flow separate regions of alternating magnetic field. But when the density drops below a critical value, or equivalently for distances from the pulsar greater than a critical radius, a strong superluminal wave can also propagate. In this contribution we discuss the conversion of the equatorial striped wind into a linearly polarized superluminal wave, and we argue that this mode is important for the conversion of Poynting flux to kinetic energy flux before the outflow reaches the termination shock.

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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