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arxiv: astro-ph/9701138 · v2 · submitted 1997-01-20 · 🌌 astro-ph

CDM Models with a Smooth Component

Michael Turner , Martin White This is my paper
classification 🌌 astro-ph
keywords omegacomponentsmoothdensityxcdmangularbestcontributes
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The inflationary prediction of a flat Universe is at odds with current determinations of the matter density (Omega_M~0.2-0.4). This dilemma can be resolved if a smooth component contributes the remaining energy density (Omega_X=1-Omega_M). We parameterize the smooth component by its equation of state, p_X=w rho_X, and show that xCDM with w~-0.6, Omega_M~0.3 and h~0.7 is the best fit to all present cosmological data. Together, the position of the peak in the CMB angular power spectrum and the Type Ia supernova magnitude-redshift diagram provide a crucial test of xCDM.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Assessing observational constraints on dark energy

    astro-ph.CO 2024-05 conditional novelty 6.0

    Quintessence models satisfying NEC everywhere predict the w0 > -1 and w0+wa < -1 sector favored by data, due to an approximate degeneracy in the w(z) = w0 + wa z/(1+z) parameterization.