New Constraints on the Variable Equation of State Parameter from X-Ray Gas Mass Fractions and SNe Ia
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🌌 astro-ph
keywords
equationmeasurementsstatex-rayacceleratinganalysisassumingclusters
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Recent measurements are suggesting that we live in a flat Universe and that its present accelerating stage is driven by a dark energy component whose equation of state may evolve in time. Assuming two different parameterizations for the function $\omega(z)$, we constrain their free parameters from a joint analysis involving measurements from X-Ray luminosity of galaxy clusters and SNe type Ia data.
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