TITLE:   GCN CIRCULAR
NUMBER:  21949
SUBJECT: GRB 170906C: 15 GHz upper limits from AMI
DATE:    17/10/01 20:11:13 GMT
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 
170906C (Siegel et al., GCN 21826) as part of the 4pisky program. Our 
observation at 15 GHz on 2017 Sep 06.55 (UT) does not reveal any radio 
source at the XRT location (Evans et al., GCN 21831), with a 3sigma 
upper limit of 156 uJy. Further follow up observations have not been 
possible due to telescope maintenance.

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/.