中文

Cold Dark Matter Resuscitated?

天体物理学 2016-06-08 v2

摘要

The Cold Dark Matter (CDM) model has an elegant simplicitly which makes it very predictive, but when its parameters are fixed at their `canonical' values its predictions are in conflict with observational data. There is, however, much leeway in the initial conditions within the CDM framework. We advocate a re-examination of the CDM model, taking into account modest variation of parameters from their canonical values. We find that CDM models with n=0.8n=0.8--0.9 and h=0.45h=0.45--0.50 can fit the available data. Our ``best fit'' CDM model has n=0.9n=0.9, h=0.45h=0.45 and C2T/C2S=0.7C_2^{T}/C_2^{S}=0.7. We discuss the current state of observations which could definitely rule out this model.

关键词

引用

@article{arxiv.astro-ph/9508009,
  title  = {Cold Dark Matter Resuscitated?},
  author = {Martin White and Douglas Scott and Joe Silk and Marc Davis},
  journal= {arXiv preprint arXiv:astro-ph/9508009},
  year   = {2016}
}

备注

6 pages, self-unpacking uuencoded compressed postscript, with 4 included figures, to appear in MNRAS. References added and Fig.3 corrected. Also available at http://physics7.berkeley.edu/cmbserve/gen.html