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arXiv · 2106.09540

Fast Afterglows of Fast Radio Bursts

Andrei Gruzinov
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Abstract

The main FRB event may leave behind a clump of relativistic plasma with high ``free energy'' density. As the plasma undergoes collisionless relaxation, it emits coherent electromagnetic waves. These electromagnetic waves may be observable as a fast radio afterglow, with decreasing frequency and intensity. We demonstrate the fast coherent afterglow in a numerical experiment. We tentatively predict the peak afterglow frequency decreasing with time as $\nu \propto t^{-3/2}$.

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Andrei Gruzinov. 2021-06-14. Fast Afterglows of Fast Radio Bursts. https://arxiv.org/abs/2106.09540

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