TITLE: GCN CIRCULAR NUMBER: 13108 SUBJECT: GRB 120326A: TAROT Calern observatory afterglow optical decay DATE: 12/03/26 02:35:17 GMT FROM: Alain Klotz at CESR-CNRS Klotz A. (IRAP-CNRS-OMP), Gendre B. (ASDC/INAF-OAR), Boer M. (UNS-CNRS-OCA), Atteia J.L. (IRAP-CNRS-OMP) report: The TAROT observations are continuing after the optical detection mentioned in the GCNC (13107): start end Rmag (min) (min) 2.22 3.21 18.2 24.91 40.66 19.1 That suggests a slow decay (alpha~0.35) of the optical afterglow.