Narrowing constraints with type Ia supernovae: converging on a cosmological constant

  title={Narrowing constraints with type Ia supernovae: converging on a cosmological constant},
  author={Scott T. Sullivan and A. Cooray and Daniel E. Holz},
  journal={Journal of Cosmology and Astroparticle Physics},
  pages={004 - 004}
We apply a parameterization-independent approach to fitting the dark energy equation-of-state (EOS). Utilizing the latest type Ia supernova data, combined with results from the cosmic microwave background and baryon acoustic oscillations, we find that the dark energy is consistent with a cosmological constant. We establish independent estimates of the evolution of the dark energy EOS by diagonalizing the covariance matrix. We find three independent constraints, which taken together imply that… 

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