[vsnet-grb-info 18444] GRB 160816A: Possible radio afterglow detection at 15 GHz with AMI

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  19892
SUBJECT: GRB 160816A: Possible radio afterglow detection at 15 GHz with AMI
DATE:    16/09/05 20:21:51 GMT
FROM:    Kunal Mooley at Oxford U  <kunal.mooley at physics.ox.ac.uk>

K. P. Mooley, T. D. Staley, R. P. Fender (Oxford), G. E. Anderson 
(Curtin), T. Cantwell (Manchester), C. Rumsey, D. Titterington, S. H. 
Carey, J. Hickish, Y. C. Perrott, N. Razavi-Ghods, P. Scott (Cambridge), 
K. Grainge, A. Scaife (Manchester)

We observed the Fermi/LAT GRB 160816A (Racusin et al., GCN 19802) with 
the AMI Large Array at 15 GHz on 2016 Aug 18.02, Aug 19.06, and Sep 
03.02 (UT) as part of the 4pisky program. We detect a possible radio 
afterglow (consistent with the XRT location; Kennea et al., GCN 19806) 
in the second epoch with a peak flux density of 129+/-32 uJy, and 3sigma 
upper limits of 111 uJy and 168 uJy in the first and third epochs 
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/.