GCN Circular 3702
Subject
GRB 050709: PROMPT Rc Observations
Event
Date
2005-07-30T05:41:53Z (21 years ago)
From
Josh Haislip at U.North Carolina <haislip@physics.unc.edu>
J. Haislip, J. Kirschbrown, D. Reichart report on behalf of the UNC team of
the FUN GRB Collaboration:
Under the control of Skynet, PROMPT automatically observed the localization
of the probable short-hard GRB 050709 (Butler et al., GCN 3570; Boer et
al., GCN 3653) beginning 1.1 days after the burst (Bayliss et al., GCN
3569) and again beginning 8.3 days after the burst.
3-sigma limiting magnitudes are based on 5 USNO-B1.0 stars:
Mean Time Integration Filter Limiting Telescope
Since GRB Time Magnitude
1d 5h 36m 82 x 80s Rc 21.6 PROMPT-5
8d 9h 3m 136 x 80s Rc 21.6 PROMPT-5
We detect the host galaxy (Fox et al., GCN 3585; Price et al., GCN 3612)
in both epochs and measure its brightness to be Rc = 21.16 +/- 0.26 and Rc
= 21.06 +/- 0.21, respectively. PSF-matched image subtraction using ISIS2
(Alard 2000) does not reveal the afterglow (Price et al., GCN 3612).
PROMPT is still being built and commissioned.
Alard, C. 2000, A&AS, 114, 363