GCN Circular 21087
Subject
GRB 170510A: LCO possible counterpart
Date
2017-05-11T04:14:49Z (8 years ago)
From
Bruce Gendre at UVI <bruce.gendre@gmail.com>
A. Cucchiara, D. Morris (U. of Virgin Islands),
C. Guidorzi (U. Ferrara), B. Gendre (U. of
Virgin Islands), reports on behalf of a larger
collaboration:
"On May 10 at 16:46 UT (T_0 +11.4h) we began observing the center
of the field of LAT GRB 170510A (Bissaldi et al. GCN #21080)
using the Las Cumbres Observatory 1m Sutherland facility.
We covered 50% of the LAT error region and we obtained a series
of 5x120s observations in R band, for a total of 10 minutes on sky.
We identified a possible optical counterpart of GRB170510A located
at the same position of candidate #1 from the Swift-XRT tiled
observations (Evans et al. GCN #21082, Melandri et al. GCN #21086).
Our preliminary photometry for this source is:
R = 19.6 +/- 0.2 mag
At the moment we cannot establish the temporal variability of this source.
This magnitude is calibrated against nearby USNO-B1 sources,
and is not corrected for Galactic Extinction."