{
  "subject": "GRB 200205A: Swift detection of a burst with a possible UV counterpart",
  "eventId": "GRB 200205A",
  "bibcode": "2020GCN.26982....1E",
  "createdOn": 1580886859000,
  "circularId": 26982,
  "submitter": "Kim Page at U.of Leicester  <klp5@leicester.ac.uk>",
  "email": "klp5@leicester.ac.uk",
  "body": "P. A. Evans (U Leicester), A. Y. Lien (GSFC/UMBC),\nK. L. Page (U Leicester), K. K. Simpson (PSU) and\nA. Tohuvavohu (U Toronto) report on behalf of the Neil Gehrels Swift\nObservatory Team:\n\nAt 06:35:51 UT, the Swift Burst Alert Telescope (BAT) triggered and\nlocated GRB 200205A (trigger=954304).  Swift slewed immediately to the burst. \nThe BAT on-board calculated location is \nRA, Dec 130.171, -35.245 which is \n   RA(J2000) = 08h 40m 41s\n   Dec(J2000) = -35d 14' 39\"\nwith an uncertainty of 3 arcmin (radius, 90% containment, including \nsystematic uncertainty). As is usual with an image trigger, the available\nBAT light curve shows no significant structure. \n\nThe XRT began observing the field at 06:38:07.9 UT, 136.3 seconds after\nthe BAT trigger. XRT found a bright, uncatalogued X-ray source located\nat RA, Dec 130.1717, -35.2715 which is equivalent to:\n   RA(J2000)  = 08h 40m 41.21s\n   Dec(J2000) = -35d 16' 17.4\"\nwith an uncertainty of 5.0 arcseconds (radius, 90% containment). This\nlocation is 95 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\nThe initial flux in the 2.5 s image was 3.00e-09 erg cm^-2 s^-1 (0.2-10\nkeV). \n\nUVOT took a finding chart exposure of 250 seconds with the UVW2 filter\nstarting  139 seconds after the BAT trigger. There is a possible UVOT\ncounterpart close to the XRT position, but we cannot provide precise\ncoordinates at this time. \n\nBurst Advocate for this burst is P. A. Evans (pae9 AT star.le.ac.uk). \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/)"
}