Observational Constraints on the Nature of Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey

M. Wood‐Vasey, W.; Miknaitis, G.; W. Stubbs, C.; W. Jha, Saurabh; G. Riess, Adam; Garnavich, P.; Kirshner, R.; Aguilera, C.; Becker, A.; W. Blackman, Joshua; Blondin, S.; Challis, Peter; Clocchiatti, A.; Conley, A.; Covarrubias, R.; M. Davis, T.; V. Filippenko, A.; J. Foley, R.; Garg, Arti; Hicken, M.; Krisciunas, K.; Leibundgut, B.; Li, Wenyu; Matheson, T.; Miceli, A.; Narayan, Gautham; Pignata, G.; L. Prieto, J.; Rest, A.; Salvo, M.; Schmidt, B.; C. Smith, R.; Sollerman, J.; Spyromilio, J.; Tonry, J.; B. Suntzeff, N.; Zenteno, A.

doi:10.1086/518642

Public

Observational Constraints on the Nature of Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey

Published in The Astrophysical Journal • Aug 31, 2007

Authors:

W. M. Wood‐Vasey

G. Miknaitis

C. W. Stubbs

Abstract

We present constraints on the dark energy equation-of-state parameter, w = P /(ρ c 2 ), using 60 SNe Ia from the ESSENCE supernova survey. We derive a set of constraints on the nature of the dark energy assuming a flat universe. By including constraints on (Ω M , w ) from baryon acoustic oscillation...

Subject

Physics

Dark energy

Supernova

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