HETE Burst U11568

Burst U11568 summary

  • Trigger time is
    • UTC=20050209_013141
    • GRB=GRB050209+5501
  • Triggering instrument was unknown
  • Trigger timescale was 9999.0 seconds
  • Trigger detected in unknown keV band

Evaluation GRB050209


Download ASCII table of Fregate Band A, B, C lightcurves here.

The color of trigger U11568, defined by the ratio of total counts in Fregate band C (30-400 keV) to band A (7-40 keV) vs. band B (7-80 keV) to band A, overlaid on a the color-color plot of all localized bursts detected to date. Note the separation of XRFs, XRRs, and GRBs.

The signal to noise in Fregate band C (30-400 keV) of trigger U11568 in relation to the S/N of band C of other localized HETE triggers. We find empirically that most XRFs are faint and soft: the fact that localized bursts require a minimum S/N in the 2-25 keV band means that the band C S/N should be low. We find a cutoff in the band C S/N of 6.5 delineates the XRF/non-XRF population with high reliability.

A multiband lightcurve for U11568

Skymap for HETE trigger U11568

Link to Jochen Greiner's web page on GRB050209