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- W2044953304 abstract "We present cosmological constraints arising from the first measurement of the radial (line-of-sight) baryon acoustic oscillations (BAO) scale in the large scale structure traced by the galaxy distribution. Here we use these radial BAO measurements at $z=0.24$ and $z=0.43$ to derive new constraints on dark energy and its equation of state for a flat universe, without any other assumptions on the cosmological model: $w=ensuremath{-}1.14ifmmodepmelsetextpmfi{}0.39$ (assumed constant), ${ensuremath{Omega}}_{m}={0.24}_{ensuremath{-}0.05}^{+0.06}$. If we drop the assumption of flatness and include previous cosmic microwave background and supernova data, we find $w=ensuremath{-}0.974ifmmodepmelsetextpmfi{}0.058$, ${ensuremath{Omega}}_{m}=0.271ifmmodepmelsetextpmfi{}0.015$, and ${ensuremath{Omega}}_{k}=ensuremath{-}0.002ifmmodepmelsetextpmfi{}0.006$, in good agreement with a flat cold dark matter cosmology with a cosmological constant. To our knowledge, these are the most stringent constraints on these parameters to date under our stated assumptions." @default.
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- W2044953304 date "2009-08-25" @default.
- W2044953304 modified "2023-10-08" @default.
- W2044953304 title "First Cosmological Constraints on Dark Energy from the Radial Baryon Acoustic Scale" @default.
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- W2044953304 doi "https://doi.org/10.1103/physrevlett.103.091302" @default.
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