{
  "bibcode": "2007GCN..6213....1M",
  "body": "F.E. Marshall (NASA/GSFC) and J.R. Cummings (NASA/UMBC) report\non behalf of the Swift team:\n\nThe bright optical afterglow of GRB 070318 (Cummings et al., GCN Circ. 6210)\nis following an approximately power-law decay. At 13,000 sec. after the\ntrigger, the magnitude in the UVOT B filter is ~19.9 with a best-fit\ndecay index of 1.16. If this rate of decay continues, the B magnitude\nwill be 22.3 at one day after the trigger and 23.2 a day later.\n \nThe afterglow has been detected in all 7 UVOT filters indicating that\nthe redshift is less than ~2.\n\nObservations with ground-based telescopes are encouraged.",
  "circularId": 6213,
  "createdOn": 1174237786000,
  "email": "marshall@milkyway.gsfc.nasa.gov",
  "subject": "GRB 070318: Swift/UVOT Continued Observations",
  "submitter": "Frank Marshall at GSFC  <marshall@milkyway.gsfc.nasa.gov>",
  "eventId": "GRB 070318"
}