{
  "bibcode": "2012GCN.13711....1M",
  "body": "F. E. Marshall (NASA/GSFC), V. D'Elia (ASDC), M. Siegel (PSU),\nand W. H. Baumgartner (GSFC/UMBC) report on behalf of the Swift team:\n  \nSwift observed again the Fermi/LAT-detected GRB 120830A (Vianello et\nal., GCN Circ. 13704; Hurley et al., GCN Circ 13705).\n\nA new 4 ks XRT observation was taken to check for variability of the\nsource reported in Baumgartner et al. (GCN Circ. 13709). The\nobservation began about 129 ks after the burst. The x-ray source previously\ndetected at low confidence with a count rate of (2.53 +/- 1.0)e-3\ncts/s is no longer detected with a three sigma upper limit of\n2.18e-03 cts/s.\n\nUVOT made a second observation of GRB 120830A starting\n129 ks after the LAT/IPN trigger. The flux of the UVOT source\npreviously detected has not changed, indicating\nthat it is unlikely to be the afterglow of the GRB.\nAs noted by Lipunov (GCN Circ. 13710), the\nsource position is consistent with a WISE catalogued source.\n\nPreliminary results using the UVOT photometric system\n(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) are:\n\nFilter         T_start(s)   T_stop(s)      Exp(s)           Mag\nwhite            59804        67310         3679         20.42 +/- 0.04\nwhite           128849       136335         3883         20.43 +/- 0.04\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.032 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 13711,
  "createdOn": 1346517702000,
  "email": "femarsha@khamseen.gsfc.nasa.gov",
  "subject": "GRB 120830A: Further Swift Observations",
  "submitter": "Frank Marshall at GSFC  <femarsha@khamseen.gsfc.nasa.gov>",
  "eventId": "GRB 120830A"
}