Jul 5 – 10, 2021
Europe/Rome timezone

Magnetar Giant Flare Origin of Gamma-Ray Burst

Jul 6, 2021, 7:10 AM
Invited talk in the parallel session Unusual and New Types of Gamma-ray Bursts Unusual and New Types of Gamma-Ray Bursts


Jun Yang (Nanjing University)


The giant flares of soft gamma-ray repeaters (SGRs) have long been proposed to contribute to at least a subsample of the observed short gamma-ray bursts (GRBs). We performed a comprehensive analysis of the high-energy data of the bright short GRB 200415A, which was located close to the Sculptor galaxy. Our results suggest that a magnetar giant flare provides the most natural explanation for most observational properties of GRB 200415A, including its location, temporal and spectral features, energy, statistical correlations, and high-energy emissions. On the other hand, the compact star merger GRB model is found to have difficulty reproducing such an event in a nearby distance. Future detections and follow-up observations of similar events are essential to firmly establish the connection between SGR giant flares and a subsample of nearby short GRBs.

Primary authors

Jun Yang (Nanjing University) Dr Vikas Chand (Nanjing University) Prof. Binbin Zhang (Nanjing University) Prof. Bing Zhang (University of Nevada Las Vegas)

Presentation materials

There are no materials yet.