{
  "bibcode": "2015GCN.17839....1A",
  "body": "G. E. Anderson, K. Mooley, R. P. Fender, T. D. Staley (University of Oxford),\nA. J. van der Horst (George Washington University), A. Rowlinson (CASS)\n\nWe observed the XRT position of GRB 150518A discovered by MAXI\n(Sbarufatti et al., GCN  17827, Kawamuro et al., GCN 17825) at 15 GHz\nwith the Arcminute Microkelvin Imager (AMI-LA) starting on\n2015 May 20.962 to 21.128 UT, corresponding to 2.1 days post-burst\n(Golenetskii et al., GCN 17837). On this date we detected a radio source\ncoincident with the position of the optical counterpart (Xu et al., GCN 17829)\nwith a preliminary flux of 0.19 +/- 0.04 mJy. There are no catalogued radio\nsources at this position.\n\nAn earlier observation was conducted on 2015 May 19.975 to 20.142 UT,\ncorresponding to 1.1 days post-burst, yielding a 3 sigma flux upper limit\nof 0.13 mJy.\n\nFurther AMI monitoring is planned. We thank the AMI staff for scheduling these observations.",
  "circularId": 17839,
  "createdOn": 1432219587000,
  "email": "Gemma.Anderson@physics.ox.ac.uk",
  "subject": "GRB 150518A: AMI 15 GHz detection of possible radio counterpart",
  "submitter": "Gemma Anderson at U of Oxford  <Gemma.Anderson@physics.ox.ac.uk>",
  "eventId": "GRB 150518A"
}