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IBAS alert detailed data

pkt_typeOFFLINE
pkt_time2004-04-22 07:45:28
alert_number1758
alert_subnum1
grb_time2004-04-22 06:58:05
grb_sigma11.471
grb_ra280.498
grb_dec1.9915
grb_pos_err2.5
grb_tbin0.64
det_flags202
att_flagsMIXED SNA/PRE
commentREFINED_COORDINATES_AFTER_OFFLINE_ANALYSIS
notesGRB040422, GCN NOTICES
Three WAKEUP alerts (alerts 1756, 1757, 1758) are due to relatively high sigma value of the burst (and thus small position error) as seen by ibas monitors. Unfortunately, the differences in grb positions computed by different monitors were slightly above the threshold level (function of grb sigma value), so the positions from all monitors which triggered were grouped by ibasalertd into 3 groups meaning 3 separate events => the result was 3 WAKEUP alerts for the same event. See also notes for IBAS alerts 1979 and 1980 on this page.

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Last modified: 14-Jan-2022 Page/script maintained by : Jerzy Borkowski at CAMK Torun