{
  "bibcode": "2009GCN..8864....1H",
  "body": "S. T. Holland (CRESST/GSFC/USRA), F. E. Marshall (NASA/GSFC), and\nM. C. Stroh (PSU) report, on the behalf of the Swift/UVOT team:\n\n      The Swift/UVOT observed the field of GRB 090126A (Evangelista\net al. 2009, GCN Circ. 8852) starting approximately 48 ks after the\nSuperAGILE detection.  We find no new source, relative to the DSS or\nUSNO-B1.0 catalogue, or a variable source, inside the UVOT-enhanced\nXRT error circle (Stroh et al. 2009, GCN Circ. 8854).  Preliminary\n3-sigma upper limits for detecting a source in the co-added images,\nusing an aperture-corrected 2.5 arcsecond radius circular aperture,\nare\n\nFilter   T_start   T_stop    Exp(s)    Mag\n------------------------------------------\n  v      49,398   55,302      208   >20.1\n  b      48,033   71,752     3256   >22.7\n  u      47,960   71,155      333   >21.0\nwhite    48,713   66,162     2022   >23.1\n------------------------------------------\n\nThe quoted upper limits have not been corrected for the expected\nGalactic extinction along the line of sight corresponding to a\nreddening of E_{B-V} = 0.20 mag (Schlegel et al., 1998, ApJS, 500,\n525).  All photometry is on the UVOT photometry system described in\nPoole et al. (2008, MNRAS, 383, 627).\n\nPlease update my e-mail address in your Address Book to <Stephen.T.Holland@nasa.gov \n >.\n/\n\\\n/",
  "circularId": 8864,
  "createdOn": 1233338620000,
  "email": "Stephen.T.Holland@nasa.gov",
  "subject": "GRB 090126A: Swift/UVOT Upper Limits",
  "submitter": "Stephen Holland at USRA/NASA/GSFC/SSC  <Stephen.T.Holland@nasa.gov>",
  "eventId": "GRB 090126A"
}