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arXiv 2103.00470astro-ph.HE
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快速射电暴的发射机制

Emission Mechanisms of Fast Radio Bursts

Yuri Lyubarsky

摘要:

快速射电暴(FRB)是最近发现的一种神秘的射电单脉冲,主要来自宇宙学距离($\sim 1$ Gpc)。它们的短持续时间($\sim 1$ ms)和大光度证明了相干发射。我回顾了FRB相干发射机制的基本物理。特别讨论了在磁重联过程中,聚束的曲率发射、同步脉塞和变电流的无线电波发射。特别注意磁星耀斑作为最有前途的FRB的来源。非线性效应的概述,可以放置在输出辐射的功率上的界限。

英文摘要:

Fast radio bursts (FRBs) are recently discovered mysterious single pulses of radio emission, mostly coming from cosmological distances ($\sim 1$ Gpc). Their short duration, $\sim 1$ ms, and large luminosity evidence coherent emission. I review the basic physics of coherent emission mechanisms proposed for FRBs. In particular, I discuss the curvature emission of bunches, the synchrotron maser, and the emission of radio waves by variable currents in the course of magnetic reconnection. Special attention is paid to magnetar flares as the most promising sources of FRBs. Non-linear effects are outlined that could place bounds on the power of the outgoing radiation.

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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