[vsnet-grb-info 2980] GRB 060218/SN 2006aj: optical observations

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4817
SUBJECT: GRB 060218/SN 2006aj: optical observations
DATE:    06/02/23 10:37:29 GMT
FROM:    Daniele Malesani at SISSA-ISAS,Trieste,Italy  <malesani at sissa.it>

D. Malesani (SISSA/ISAS), P. D'Avanzo (INAF/OABr), M. Della Valle 
(INAF/OAA), L.A. Antonelli, V. D'Elia, F. Fiore, S. Piranomonte, L. 
Stella (INAF/OAR), S. Campana, G. Chincarini, S. Covino, G. Tagliaferri 
(INAF/OABr), N. Masetti, E. Palazzi (INAF/IASF Bo), E. Pian (INAF/OATs), 
M. Pedani (INAF/TNG) report:

We observed the optical counterpart of GRB 060218 (Cusumano et al., GCN 
4775, 4781; Marshall et al., GCN 4800) with the TNG telescope under good 
observing conditions. Comparison of the new data with our earlier 
photometry (D'Avanzo et al., GCN 4810) reveals further brightening of 
the source between Feb 21.85 and Feb 22.86 UT. This is consistent with 
the underlying supernova being in the rise phase (Masetti et al., GCN 
4803; Soderberg et al., IAUC 8674; Fugazza et al., GCN 4807, CBET 410; 
Mirabal et al., CBET 409; Fatkhullin et al., GCN 4809; Mazzali & Pian, 
GCN 4812).

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