Where Are the Baryons

  title={Where Are the Baryons},
  author={R. Cen and J. Ostriker},
  journal={The Astrophysical Journal},
New high-resolution, large-scale cosmological hydrodynamic galaxy formation simulations of a standard cold dark matter model (with a cosmological constant) are utilized to predict the distribution of baryons at the present and at moderate redshift. It is found that the average temperature of baryons is an increasing function of time, with most of the baryons at the present time having a temperature in the range of 105-107 K. Thus not only is the universe dominated by dark matter, but more than… Expand

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