Now showing items 1-2 of 2

    • Menestrina, Justin (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 ...
    • Norris, Jackson M. (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 ...