Reionization Histories of Milky Way Mass Halos

  title={Reionization Histories of Milky Way Mass Halos},
  author={Tony Y. Li and Marcelo A. Alvarez and Risa H. Wechsler and Tom Abel},
  journal={The Astrophysical Journal},
We investigate the connection between the reionization era and the present-day universe by examining the mass reionization histories of z = 0 dark matter halos. In a 6003 Mpc3 volume, we combine a dark matter N-body simulation with a three-dimensional seminumerical reionization model. This tags each particle with a reionization redshift, so that individual present-day halos can be connected to their reionization histories and environments. We find that the vast majority of present-day halos… 

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