{
  "bibcode": "2020GCN.28825....1S",
  "body": "B. Sbarufatti (PSU), J.D. Gropp (PSU), J. A. Kennea (PSU),\nN. J. Klingler (PSU), A. Y. Lien (GSFC/UMBC), K. L. Page (U Leicester)\nand A. Tohuvavohu (U Toronto) report on behalf of the Neil Gehrels\nSwift Observatory Team:\n\nAt 17:33:46 UT, the Swift Burst Alert Telescope (BAT) triggered and\nlocated GRB 201104B (trigger=1004168).  Swift slewed immediately to the burst. \nThe BAT on-board calculated location is \nRA, Dec 5.217, 7.820 which is \n   RA(J2000) = 00h 20m 52s\n   Dec(J2000) = 07d 49' 12\"\nwith an uncertainty of 3 arcmin (radius, 90% containment, including \nsystematic uncertainty). Due to GCN downtime, no BAT light curves are\navailable at this moment. \n\nThe XRT began observing the field at 17:35:28.2 UT, 102 seconds after\nthe BAT trigger. XRT found a bright, uncatalogued X-ray source located\nat RA, Dec = 5.21528, 7.84257 which is equivalent to:\n   RA(J2000)  = 00h 20m 51.7s\n   Dec(J2000) = +07d 50' 33.3\"\nwith an uncertainty of 5 arcseconds (radius, 90% containment). This\nlocation is 81.5 arcseconds from the BAT onboard position, within the BAT\nerror circle. No event data are yet available to determine the column\ndensity using X-ray spectroscopy. \n\nDue to GCN downtime, no UVOT data are available at this time. \n\nBurst Advocate for this burst is B. Sbarufatti (bxs60 AT psu.edu). \nPlease contact the BA by email if you require additional information\nregarding Swift followup of this burst. In extremely urgent cases, after\ntrying the Burst Advocate, you can contact the Swift PI by phone (see\nSwift TOO web site for information: http://www.swift.psu.edu/)",
  "circularId": 28825,
  "createdOn": 1604513407000,
  "email": "kennea@swift.psu.edu",
  "subject": "GRB 201104B: Swift detection of a burst",
  "submitter": "Jamie A. Kennea at PSU/Swift-XRT  <kennea@swift.psu.edu>",
  "eventId": "GRB 201104B"
}