The Distant Type Ia Supernova Rate
S. Fabbro, on behalf of the Supernova Cosmology Project (SCP)
LPNHE IN2P3/CNRS, 4, place Jussieu F75252 Paris cedex 05

Abstract:
We report on a measurement of the rate of distant Type Ia supernovae. The result is derived using 4 large subsets of data from the Supernova Cosmology Project. Thirty-eight supernovae were detected at redshifts $0.25$--$0.85$ in a surveyed area of about 12 square degrees. The survey spanned a $\sim 3$ week baseline and used images with $3\sigma$ limiting magnitude ranging from $R=22.5$ to $R=24.5$. Preliminary values for the rest-frame rates per unit volume and per unit luminosity are presented.