{
  "bibcode": "2008GCN..7764....1C",
  "body": "A. Copete, J. Grindlay (Harvard), J. Racusin (PSU)\nS.Barthelmy, N. Gehrels (GSFC)\n\nWe report on the detection by the BAT Slew Survey (BATSS) of a  \npossible burst in the slew that began on 05/21/08 at 03:58:02 UT, at  \nthe position:\n   RA (J2000): 12h 08m 44s\n   Dec(J2000): +30d 34' 57\"\nwith an uncertainty of 6.4 arcmin (90% confidence). This detection is  \nan image trigger from 6.4 sigma and 4.8 sigma detections in the  \n15-150keV and 50-150keV energy bands, respectively. The lightcurve  \nfeatures a downward sloping profile which suggest a main peak may have  \noccurred before the slew.\n\nThe detection was followed by an XRT ToO observation beginning on  \n05/22/08 at 15:30 UT. The 4ks observations yielded an uncatalogued X- \nray source within the BATSS error circle at\n   RA(J2000) = 12h 08m 49.54s\n   Dec(J2000) = +30d 33' 32.68\"\nwith an uncertainty of 5.4 arcsec (90% confidence), and a count rate  \nof 0.022+/-0.004 counts/s. No indication of fading was found, however,  \nwhich could be due the relatively short exposure time compared to the  \ndelay of more than a day from the initial BAT observation. A follow-up  \nXRT observation will be scheduled in order to determine fading.",
  "circularId": 7764,
  "createdOn": 1211500300000,
  "email": "acopete@head.cfa.harvard.edu",
  "subject": "GRB080521(?): detection of possible burst from BAT slew data and XRT ToO",
  "submitter": "Antonio Copete at Harvard U  <acopete@head.cfa.harvard.edu>",
  "eventId": "GRB 080521"
}