Measuring global curvature and cosmic acceleration with supernovae
Over the past five years two teams have used type la supernovae to trace the expansion of the universe to a look-back time more than 70% of the age of the universe. These observations show an accelerating universe which is best explained by a cosmological constant, or other form of dark energy with an equation of state near w = p/ρ = -1. There are many possible lurking systematic effects. However, while difficult to completely eliminate, none of these appears large enough to challenge current...[Show more]
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|Source:||Classical and Quantum Gravity|
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