HETE Burst H1959

Burst H1959 summary

  • Trigger time is
    • UTC=20020317_181531
    • GRB=GRB020317+65731
  • Triggering instrument was Fregate
  • Trigger timescale was 1.3 seconds
  • Trigger detected in 5-120 keV band


Real GRB. Very strong hard to soft spectral evolution.


HETE trigger #1959 displayed a strong hard-to-soft spectral evolution in the first 4 seconds of the burst. The large error region published initially was due to the extreme softness of the tail of the burst, which introduced uncertainties in the ground imaging software. Subsequent analyses of the harder part of the burst resulted in a better localization.