1999/06/16 by M. Rowan-Robinson, Rowan-Robinson, M.
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #Cosmology and Gravitation Theories #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9906277
13 pages, 3 tables, to appear in Proceedings of the 2nd International Workshop on 'The Identification of Dark Matter' (IDM'98), Buxton, UK, 1999, ed. N.Spooner, (World Scientific)
arxiv created 1999/06/16 · openalex publication_date 1999/06/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Determinations of the main cosmological parameters are reviewed and the implications for cold dark matter discussed. There is no longer an age problem for an Ωo = 1, Λ= 0 model and, if anything, there is now an age problem for low Ωo, Λ> 0 models. Large scale structure and CMB fluctuation data are best fitted by a mixed dark matter Ωo = 1 universe. Difficulties for this model with cluster evolution, the baryon content of clusters, high z Lyman α galaxies, and the evidence from Type Ia supernovae favouring low Ωo, Λ> 0 models, are discussed critically.