{
  "bibcode": "2014GCN.17036....1D",
  "body": "V. D'Elia (ASDC) & L. Izzo (URoma/ICRA) report on behalf of the Swift-XRT team\n\nSwift-XRT has observed the error box of the IPN GRB 141104A (Hurley et  \nal. GCN 17026) in a series of observations tiled on the sky. The total  \nexposure time is 14.0 ks spread over 3 fields. The observations  \nstarted ~ 3 days after the IPN trigger. We detect four sources with  \nS/N ~ 3 or higher, within or close to the IPN error box. Namely  \n(ordered by ascending Dec):\n\nSource 1\nRA: 279.53959 = 18h 38m 9.50s (J2000)\nDec: -13.06216 = -13d 03' 43.8\" J(2000)\nErr: 4.4 arcsec (radius, 90% confidence).\nExposure time: 3.9 ks.\n\nSource 2\nRA:  279.51690\t= 18h 38m 4.06s (J2000)\nDec:  -12.78750  = -12d 47' 15.0\" (J2000)\nErr: 4.9 arcsec (radius, 90% confidence)\nExposure time: 4.4 ks\n\nSource 3\nRA: 279.38702  = 18h 37m 32.88s (J2000)\nDec: -12.34930 = -12d 20' 57.5\" (J2000)\nErr: 3.8 arcsec (radius, 90% confidence).\nExposure time: 3.4 ks.\n\nSource 4\nRA: 279.49073 = 18h 37m 57.78s (J2000)\nDec: -12.30119 = -12d 18' 04.3\" (J2000)\nErr: 4.6 arcsec (radius, 90% confidence).\nExposure time: 3.1 ks.\n\n\nThe northernmost Sources #3 and #4 are close to (#3) or just outside  \n(#4) the IPN error box and possess an X-ray and optical counterpart,  \nso are likely unrelated to the afterglow. The central source #2 has an  \noptical counterpart, while the southernmost source #1 does not have  \ncounterparts. The most promising XRT afterglow candidate is thus  \nsource #1, although the counterpart of #2 could be the host galaxy of  \nthe afterglow.  We cannot measure variability at this time, so a  \nsecure identification of the afterglow is not possible.\n\nDetails on the present analysis can be found at:\n\nhttp://www.swift.ac.uk/xrt_products/TILED_GRB00032/\n\n\nThis is an official product of the Swift-XRT team.",
  "circularId": 17036,
  "createdOn": 1415482843000,
  "email": "delia@asdc.asi.it",
  "subject": "GRB 141104A: Swift-XRT observations",
  "submitter": "Valerio D'Elia at ASDC  <delia@asdc.asi.it>",
  "eventId": "GRB 141104A"
}