CPPM: M. Ageron, I. Al Samarai, V. Bertin, J. Brunner, J. Busto, D. Dornic, S. Escoffier IRFU: B. Vallage LAM: S. Basa, B. Gendre, A. Mazure TAROT: M. Boer, A. Le Van Suu (OHP), A. Klotz (CESR) Scientific motivations Detection of transient sources such as: - Gamma Ray Bursts - Core Collapse Sne - AGNs - Microquasars - Observed in many wavelengths (X, visible) Potential neutrino emitters So far, only 1 detection of extrasolar neutrinos) Microquasar luminosity vs time Scientific motivations One of the most interesting: GRBs: - Highly energetic gamma bursts (~10 51 ergs) - Observed at a rate