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Supernova Limits on the Cosmic Equation of State

  • Garnavich P
  • Jha S
  • Challis P
  • et al.
The Astrophysical Journal (1998) 509(1) 74-79
DOI: 10.1086/306495
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Abstract

We use Type Ia supernovae studied by the High-Z Supernova Search Team to constrain the properties of an energy component which may have contributed to accelerating the cosmic expansion. We find that for a flat geometry the equation of state parameter for the unknown component, alpha_x=P_x/rho_x, must be less than -0.55 (95% confidence) for any value of Omega_m and is further limited to alpha_x

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APA

Garnavich, P. M., Jha, S., Challis, P., Clocchiatti, A., Diercks, A., Filippenko, A. V., … Carroll, S. M. (1998). Supernova Limits on the Cosmic Equation of State. The Astrophysical Journal, 509(1), 74–79. https://doi.org/10.1086/306495

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