[vsnet-grb-info 2383] GRB 051109: PROMPT Detections

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4220
SUBJECT: GRB 051109: PROMPT Detections
DATE:    05/11/09 06:20:02 GMT
FROM:    Josh Haislip at U.North Carolina  <haislip at physics.unc.edu>

J. Haislip, M. Nysewander, M. Bayliss, A. LaCluyze, D. Reichart, J. A.
Crain, and A. Foster report on behalf of the UNC team of the FUN GRB
Collaboration.

Under the control of Skynet, PROMPT Temporary Telescope 3 automatically
observed the localization of GRB 051109 (Tagliaferri et al., GCN 4213)
beginning 1.7 min after the burst in repeating blocks of B and V.

PROMPT Temporary Telescope 5 joined PROMPT-3 15.6 min after the burst in
repeating blocks Rc and Ic.  These observations were carried out in synch
with PROMPT-3's observations.

We detect the afterglow (Rykoff et al., GCN 4211) in single V, Rc, and Ic
exposures and measure its brightness to be V ~ 16.6 mag at 3.3 min after
the burst.

PROMPT is still being built and commissioned.