GCN Circular 21465
Subject
GRB 170728A: 15 GHz upper limits from AMI
Date
2017-08-11T18:11:16Z (7 years ago)
From
Kunal Mooley at Oxford U <kunal.mooley@physics.ox.ac.uk>
K. P. Mooley (Hintze Fellow, Oxford), T. D. Staley, R. P. Fender
(Oxford), G. E. Anderson (Curtin), T. Cantwell (Manchester), D.
Titterington, S. H. Carey, J. Hickish, Y. C. Perrott, N. Razavi-Ghods,
P. Scott (Cambridge), K. Grainge, A. Scaife (Manchester)
The AMI Large Array robotically triggered on the Swift alert for GRB
170728A (Cannizzo et al., GCN 21367) as part of the 4pisky program, and
subsequent follow up observations were obtained up to 10 days
post-burst. Our observations at 15 GHz on 2017 Jul 28.32, Jul 30.25, Aug
01.27 and Aug 05.23 (UT) do not reveal any radio source at the XRT
location (Goad et al., GCN 21368), with 3sigma upper limits of 141 uJy,
131 uJy, 129 uJy and 133 uJy respectively.
We thank the AMI staff for scheduling these observations. The AMI-GRB
database is a log of all GRB follow up observations with the AMI, and is
available at http://4pisky.org/ami-grb/.