{
  "bibcode": "2006GCN..4810....1D",
  "body": "P. D'Avanzo (INAF/OABr), D. Malesani (SISSA/ISAS), M. Della Valle \n(INAF/OAA), D. Fugazza (INAF/OABr), N. Masetti, E. Palazzi (INAF/IASF \nBo), E. Pian (INAF/OATs), L.A. Antonelli, V. D'Elia, F. Fiore, S. \nPiranomonte, L. Stella (INAF/OAR), S. Campana, G. Chincarini, S. Covino, \nG. Tagliaferri (INAF/OABr), L. Di Fabrizio (INAF/TNG), report:\n\nWe observed again the optical counterpart of GRB 060218 (Moretti et al. \nGCN 4775; Marshall et al., GCN 4779) with the TNG telescope. Comparison \nbetween our previous photometry (taken on Feb 20.85 UT) and the new \nobservations (Feb 21.84 UT) reveals a rebrightening by 0.20+-0.05 mag in \nboth the V and R filters.\n\nFollowing the earlier decay (e.g. Marshall et al., GCN 4800; Berger et \nal., GCN 4808), this behaviour may mark the emergence of the underlying \nSN 2006aj already suggested on spectroscopic grounds (Masetti et al., \nGCN 4803; Soderberg et al., IAUC 8674; Fugazza et al., GCN 4807, CBET \n410; Mirabal et al., CBET 409; Fatkhullin et al., GCN 4809). The \nrebrightening may also suggest that the SN is still before its maximum.\n\nThis message can be cited.",
  "circularId": 4810,
  "createdOn": 1140580108000,
  "email": "malesani@sissa.it",
  "subject": "GRB 060218: rebrightening",
  "submitter": "Daniele Malesani at SISSA-ISAS,Trieste,Italy  <malesani@sissa.it>",
  "eventId": "GRB 060218"
}