GCN Circular 20425
K. P. Mooley, R. P. Fender (Oxford), A. Horesh (HUJI) report on behalf of a larger collaboration We observed the optical transient ATLAS17aeu (Tonry et al., LVC GCN 20382) located in the error region of LIGO/Virgo G268556 (LVC GCN 20364) with the AMI Large Array on 2017 Jan 07.04 UT. At 15.5 GHz, the flux density of the source is 336+/-20 uJy. We are currently monitoring this source. We thank the AMI staff for scheduling this observation. Since this source is likely the afterglow of GRB 170105A (e.g. Kasliwal et al., LVC GCN 20393; Chambers et al., LVC GCN 20407), we will be updating the AMI-GRB database (http://4pisky.org/ami-grb/) with the measurements.