DMSP 14 Observations of GRB011121 and the Giant SGR1900+14 Flare of 98/08/27

摘要

The bright gamma-ray burst GRB011121 was observed by DMSP 13 and DMSP 14 at a time resolution of 2s. Event data also obtained by DMSP 14 covered 13.1s of the burst at a time resolution of 12.8ms, and an energy range of 53–3000 keV. Fourier analysis gives evidence, at 95% confidence, of a 1.7s oscillation in the event data. DMSP 14 data for the giant 98/08/27 flare of SGR 1900+14 are also presented, giving high-time-resolution data, not previously available, on the initial outburst.