{
  "bibcode": "2007GCN..6923....1K",
  "body": "D. A. Kann, U. Laux & R. Filgas (TLS Tautenburg) report:\n\nWe observed the afterglow (Oksanen, GCN 6873) of GRB 071010B (Markwardt et \nal., GCN 6871) with the Tautenburg 1.34m Schmidt telescope under mediocre \nconditions (low transparency), obtaining 12 600 second images in the Rc \nband at 5.3 days after the GRB. The afterglow is faintly detected in all \nframes. We create a stacked image and, using the same comparison stars as \nKann, Hoegner & Filgas (GCN 6918), we derive the following magnitude:\n\nDate\t\tMid-Time\tRc\tdRc\n\n16.09041\t5.22528\t\t21.293\t0.045\n\nIn comparison with earlier data (see Kann, Hoegner & Filgas, GCN 6918, for \nreferences, and adding Kocevski et al., GCN 6919; Im, Lee & Urata, GCN \n6920), we find the afterglow to be 0.3 magnitudes fainter than the \nextrapolation of the earlier decay. This may indicate that a break has \noccured.\n\nInclement weather and an instrument switch will probably not allow us to \nobtain another epoch. Further follow-up at other northern facilities is \nstrongly encouraged to check the validity of the break.\n\nThis message may be cited.",
  "circularId": 6923,
  "createdOn": 1192546431000,
  "email": "kann@tls-tautenburg.de",
  "subject": "GRB 071010B: TLS 3rd Epoch - finally a break??",
  "submitter": "Alexander Kann at TLS Tautenburg  <kann@tls-tautenburg.de>",
  "eventId": "GRB 071010B"
}