Consequences for some dark energy candidates from the type Ia supernova SN 1997ff

• Published in: Monthly notices of the Royal Astronomical Society Vol. 331; no. 3; pp. 776 - 784
• Main Author: Vishwakarma, R. G.
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Science, Ltd 11.04.2002
• Subjects: cosmology: theory; dark matter; supernovae: general; supernovae: individual: SN 1997ff

We examine the status of various dark energy models in light of the recently observed SN 1997ff at z≈1.7. The modified data still fit a pure cosmological constant Λ or a quintessence with an equation of state similar to that of Λ. The kinematical Λ models, Λ∼S−2 and Λ∼H2, also fit the data reasonabl...