Fast Afterglows of Fast Radio Bursts. (arXiv:2106.09540v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Gruzinov_A/0/1/0/all/0/1">Andrei Gruzinov</a> (NYU)
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 $nu
propto t^{-3/2}$.
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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