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<100RNS. The radio emission is produced by the yet unidentified plasma emission process, occurring during the initial stages of reconnection events.
@article{arxiv.2005.05093,
title = {Fast Radio Bursts from reconnection events in magnetar magnetospheres},
author = {Maxim Lyutikov and Sergey Popov},
journal= {arXiv preprint arXiv:2005.05093},
year = {2020}
}