The Supernova Legacy Survey

Type Ia supernovae currently provide the most direct evidence for an accelerating Universe and for the existence of an unknown ``dark energy'' driving this expansion. The 5-year Supernova Legacy Survey will deliver ∼1000 Type Ia detections with well-sampled g'r'i'z' light curves. Using this definitive dataset, we will obtain a precise measurement of the cosmological parameters (Ω_{m}, Ω_{Λ}); our goal is to determine the cosmological equation of state parameter w to a statistical precision of ±0.07, testing theories for the origin of the universal acceleration. In these Proceedings, we summarise the progress made during the first full year of the survey operation.

See http://cfht.hawaii.edu/SNLS/