{
  "bibcode": "2009GCN..8827....1S",
  "body": "P. Schady (MSSL-UCL) reports on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began white-band observations of the field of the  \nlikely GRB candidate detected in the BAT Slew Survey (BATSS), GRB  \n090118 (Copete et al., GCN 8825) at 2009-01-018 20:55:35 UT, 25.3 ks  \nafter the burst. We do not detect any new source within the Swift BAT  \nerror circle (Copete et al., GCN 8825) in a co-added white-band image  \ndown to the following 5-sigma upper limit:\n\nFilter    T_start  T_stop  Exp         Mag\n                (ks)       (ks)       (s)    (5-sigma upper limit)\n-------------------------------------------------------------\nwhite       25.3    35.3    1292     > 21.1\n-------------------------------------------------------------\n\nThe quoted upper limits have not been corrected for the expected  \nGalactic extinction along the line of sight of E_(B-V) = 0.13 mag. All  \nphotometry is on the UVOT photometric system described in Poole et al.  \n(2008, MNRAS, 383, 627).",
  "circularId": 8827,
  "createdOn": 1232365640000,
  "email": "ps@mssl.ucl.ac.uk",
  "subject": "GRB090118 Swift/UVOT upper limits",
  "submitter": "Patricia Schady at MSSL/Swift  <ps@mssl.ucl.ac.uk>",
  "eventId": "GRB 090118"
}