Magnetar Giant Flare Origin for GRB 200415A Inferred from a New Scaling Relation
Magnetar Giant Flare Origin for GRB 200415A Inferred from a New Scaling Relation
Soft gamma-ray repeaters (SGRs) are mainly a Galactic population and originate from neutron stars with intense ($B\simeq 10^{15}{\rm \ G}$) magnetic fields ('magnetars'). Occasionally, a giant flare occurs with enormous intensity, displaying a short hard spike, followed by a weaker, oscillatory phase which exhibits the rotational period of the neutron …