Fast Radio Bursts from reconnection events in magnetar magnetospheres. (arXiv:2005.05093v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Lyutikov_M/0/1/0/all/0/1">Maxim Lyutikov</a> (Purdue University), <a href="http://arxiv.org/find/astro-ph/1/au:+Popov_S/0/1/0/all/0/1">Sergey Popov</a> (Sternberg Astronomical Institute, Higher School of Economics)
Lyutikov (2002) predicted “radio emission from soft gamma-ray repeaters
(SGRs) during their bursting activity”. Detection of a Mega-Jansky radio burst
in temporal coincidence with high energy bursts from a Galactic magnetar SGR
1935+2154 confirms that prediction. Similarity of this radio event with Fast
Radio Bursts (FRBs) suggests that FRBs are produced within magnetar
magnetospheres. We demonstrate that SGR 1935+2154 satisfies the previously
derived constraints on the physical parameters at the FRBs’ loci. Coherent
radio emission is generated in the inner parts of the magnetosphere at $r< 100
R_{rm NS}$. The radio emission is produced by the yet unidentified plasma
emission process, occurring during the initial stages of reconnection events.
Lyutikov (2002) predicted “radio emission from soft gamma-ray repeaters
(SGRs) during their bursting activity”. Detection of a Mega-Jansky radio burst
in temporal coincidence with high energy bursts from a Galactic magnetar SGR
1935+2154 confirms that prediction. Similarity of this radio event with Fast
Radio Bursts (FRBs) suggests that FRBs are produced within magnetar
magnetospheres. We demonstrate that SGR 1935+2154 satisfies the previously
derived constraints on the physical parameters at the FRBs’ loci. Coherent
radio emission is generated in the inner parts of the magnetosphere at $r< 100
R_{rm NS}$. The radio emission is produced by the yet unidentified plasma
emission process, occurring during the initial stages of reconnection events.
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