{
  "bibcode": "2012GCN.13911....1S",
  "body": "R.L.C. Starling (U. Leicester), A.J. Levan (U. Warwick), K. Wiersema (U. Leicester), A.R. Lopez-Sanchez (AAO/Macquarie\n+University), N.R. Tanvir (U. Leicester), T. Young (ANU), L. Spitler (Macquarie University/AAO) and S. Lee (AAO) report:\n\nWe triggered near-infrared observations with IRIS2 on the Anglo-Australian Telescope for GRB 121027A, beginning ~3.5 hours\n+after the Swift BAT trigger (Evans et al. GCN Circ. 13907).\n\nThe field was observed for 2x10 minutes in each of J, H and K bands. In a preliminary analysis of the K band data (beginning\n+13:49 UT) we clearly detect a source within the enhanced XRT error circle (www.swift.ac.uk/sper/536831) at position:\n\nRA   04 14 23.44\nDec -58 49 47.4 (J2000)\n\nwith approximate magnitude K(AB)=21.10 +/- 0.13.\n\nThe source is not discernable from the J and H band images. These, however, do not go as deep owing to variable weather\n+conditions; the limiting magnitude in H(AB) is 21.3 (3-sigma, beginning 13:22 UT).\n\n\nThese data were obtained under programme AAT/12B/30.\n\n[GCN OPS NOTE(28oct12): Per author's request, ALG was changed to ARL-S in the author list.]",
  "circularId": 13911,
  "createdOn": 1351368673000,
  "email": "rlcs1@star.le.ac.uk",
  "subject": "GRB 121027A: nIR afterglow candidate with AAT",
  "submitter": "Rhaana Starling at U of Leicester  <rlcs1@star.le.ac.uk>",
  "eventId": "GRB 121027A"
}