{
  "bibcode": "2008GCN..7421....1S",
  "body": "P. Schady (MSSL/UCL) and K. L. Page (U Leicester) report on behalf of the \nSwift UVOT team:\n\nThe Swift/UVOT observed the field of GRB 080315 starting 125 s after the \nBAT trigger (Page et al., GCN 7416). We do not find any source in any of \nthe individual or co-added exposures, either within the BAT error circle \nor at the location of the weak source detected by XRT (Barthelmy et al. \nGCN 7420).\n\nThe 5-sigma upper limits for detecting a source at the position of the XRT \ncandidate in the co-added images are:\n\nFilter  T_start T_stop Exp      Mag\n         (s)     (s)    (s)      (5-sigma upper limit)\n-----------------------------------------------------\nv       127     42160   6078.4  > 20.79\nb       608     40422   5815.6  > 21.84\nu       582     7467    620.7   > 20.30\nuvw1    558     7281    468.7   > 19.82\nuvm2    533     7075    858.7   > 20.00\nuvw2    113     41328   5847.3  > 21.63\n-----------------------------------------------------\n\nThe quoted upper limits have not been corrected for the expected Galactic \nextinction along the line of sight corresponding to a reddening of E(B-V) \n= 0.01 mag. All photometry is on the UVOT light flight system described in \nPoole et al. (2008, MNRAS, 383, 627).",
  "circularId": 7421,
  "createdOn": 1205617001000,
  "email": "ps@mssl.ucl.ac.uk",
  "subject": "Swift/UVOT observations of GRB 080315",
  "submitter": "Patricia Schady at MSSL/Swift  <ps@mssl.ucl.ac.uk>",
  "eventId": "GRB 080315"
}