{
  "email": "natbutler@asu.edu",
  "submitter": "Nat Butler at Az State U  <natbutler@asu.edu>",
  "createdOn": 1380160531000,
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov>",
  "version": 2,
  "eventId": "GRB 130925A",
  "circularId": 15258,
  "body": "Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William\nH. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB),\nJ. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (UCSC),\nEleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC),\nJosé A. de Diego (UNAM), Leonid Georgiev (UNAM), Jesús González (UNAM),\nCarlos Román-Zúñiga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC)\nreport:\n\nWe observed the field of GRB 130925A (Lien, et al., GCN 15246) with the\nReionization and Transients Infrared Camera (RATIR; www.ratir.org) on the\n1.5m Harold Johnson Telescope at the Observatorio Astronómico Nacional on\nSierra San Pedro Mártir from 2013/09 25.27 to 2013/09 25.50 UTC (2.30 to\n7.81 hours after the BAT trigger), obtaining a total of 3.67 hours exposure\nin the r and i bands and 1.43 hours exposure in the Z, Y, J, and H bands.\n\nWe find an uncatalogued source in the enhanced Swift-XRT error circle\n(Evans et al., GCN 15251).  In comparison with USNO-B1 and 2MASS, we obtain\nthe following detections and upper limits (3-sigma):\n\n  r     22.26 +/- 0.11\n  i     21.75 +/- 0.10\n  Z     20.25 +/- 0.06\n  Y     20.77 +/- 0.14\n  J     19.98 +/- 0.07\n  H     19.85 +/- 0.12\n\nThese magnitudes are in the AB system and are not corrected for Galactic\nextinction in the direction of the GRB.  The source is spatially coincident\nand about as bright as the source reported by Sudilovsky et al. (GCN\n15247), which was observed minutes rather than hours after the GRB.\n Further observations are planned.\n\nWe thank the staff of the Observatorio Astronómico Nacional in San Pedro\nMártir.",
  "bibcode": "2013GCN.15258....1B",
  "subject": "GRB 130925A: RATIR Optical and NIR Observations",
  "editedOn": 1731005879302,
  "format": "text/plain"
}