The Multiphase Intracluster Medium in Galaxy Groups Probed by the Lyman Alpha Forest

  title={The Multiphase Intracluster Medium in Galaxy Groups Probed by the Lyman Alpha Forest},
  author={Hu Zhan and Li-zhi Fang and David Burstein},
  journal={arXiv: Astrophysics},
The case is made that the intracluster medium (ICM) in spiral-rich galaxy groups today probably has undergone much slower evolution than that in elliptical-rich groups and clusters. The environments of proto-clusters and proto-groups at z > 2 are likely similar to spiral-rich group environments at lower redshift. Therefore, like the ICM in spiral-rich groups today, the ICM in proto-groups and proto-clusters at z > 2 is predicted to be significantly multiphased. The QSO Lyman alpha forest in the… 

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