{
  "bibcode": "2008GCN..8221....1V",
  "body": "P.M. Vreeswijk, J.P.U. Fynbo, D. Malesani (DARK/NBI) report on behalf \nof a larger collaboration:\n\nThe field of GRB 080913 (Swift trigger 324561; Schady et al., GCN \n#8217) was observed in target-of-opportunity mode with VLT+FORS2 using \nthe imaging sequence RzIVBR, starting at 7:31 UT on September 13, 2008, \ni.e. 45 minutes after the GRB.\n\nIn the z-band image a faint source is detected within the Swift/XRT \nerror circle, with magnitude z(AB) = 23.1 (based on a very preliminary \ncalibration), while this object is not detected in any of the other \noptical filters. Comparison with the z-band magnitude reported by Rossi \net al. (GCN #8218) suggests that the object has faded between 3 and 45 \nminutes after the burst, and therefore is likely the afterglow of GRB \n080913.\n\nWe are very grateful for the excellent support by the Paranal \nobservatory staff, in particular Rachel Gilmour and Heidi Korhonen.\n\n[GCN OPS NOTE(06nov08): Per author's request, \"Heidi Schmidt\" was\nchanged to \"Hiedi Korhonen\".]",
  "circularId": 8221,
  "createdOn": 1221303528000,
  "email": "pmv@dark-cosmology.dk",
  "subject": "GRB 080913: VLT/FORS2 observations",
  "submitter": "Paul Vreeswijk at Dark Cosmology Centre,U.of Copenhagen  <pmv@dark-cosmology.dk>",
  "eventId": "GRB 080913"
}