{
  "bibcode": "2014GCN.16887....1L",
  "body": "Owen Littlejohns (ASU), Nat Butler (ASU), Alan M. Watson (UNAM),\nAlexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer\n(UNAM), Chris Klein (UCB), Ori Fox (UCB), J. Xavier Prochaska (UCSC),\nJosh Bloom (UCB), Antonino Cucchiara (ORAU/GSFC), Eleonora Troja\n(GSFC), Enrico Ramirez-Ruiz (UCSC), Jos�� A. de Diego (UNAM), Leonid\nGeorgiev (UNAM), Jes��s Gonz��lez (UNAM), Carlos Rom��n-Z����iga (UNAM),\nNeil Gehrels (GSFC), and Harvey Moseley (GSFC) report:\n\nWe observed the field of GRB 141004A (D'Elia, et al., GCN 16878) with\nthe Reionization and Transients Infrared Camera (RATIR; www.ratir.org)\non the 1.5m Harold Johnson Telescope at the Observatorio Astron��mico\nNacional on Sierra San Pedro M��rtir from 2014/10 5.30 to 2014/10 5.35\nUTC (7.82 to 9.15 hours after the BAT trigger), obtaining a total of\n1.07 hours exposure in the r and i bands.\n\nWe detect the source reported by Swift/UVOT (D'Elia, et al., GCN 16878)\nand the 3.6m TNG telescope (D'Elia, et al., GCN 16881). We obtain the\nfollowing detections:\n\n  r     22.35 +/- 0.13\n  i     22.11 +/- 0.12\n\nThese magnitudes are in the AB system and are not corrected for Galactic\nextinction in the direction of the GRB. In comparison to the earlier TNG\nobservations we note that the GRB has faded with an approximate\ntemporal power-law index of t^(-1.0).\n\nWe thank the staff of the Observatorio Astron��mico Nacional in San Pedro\nM��rtir.",
  "circularId": 16887,
  "createdOn": 1412501652000,
  "email": "olittlej@asu.edu",
  "subject": "GRB 141004A: RATIR Optical Observations",
  "submitter": "Owen Littlejohns at Az State U  <olittlej@asu.edu>",
  "eventId": "GRB 141004A"
}