http://arxiv.org/abs/2106.09540
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 $\nu \propto t^{-3/2}$.
A. Gruzinov
Fri, 18 Jun 21
62/62
Comments: 5 pages, 3 figures
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