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
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.