Browsing Physics and Astronomy Department by Subject "Cosmology"
Now showing items 1-2 of 2
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(Vanderbilt University. Dept. of Physics and Astronomy, 2012-04)Cosmic microwave background (CMB) observations suggest the possibility of an extra dark radiation component, while the current evidence from big bang nucleosynthesis (BBN) is more ambiguous. Dark radiation from a decaying ...
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(Vanderbilt University. Dept. of Physics and Astronomy, 2008-04-20)We use projected number density profiles of galaxy groups to investigate the relationship between galaxy group structure and dark matter structure within halos. We primarily study a specific model of how galaxies populate ...