The Spin Temperature and 21cm Brightness of the Intergalactic Medium in the Pre-reionization Era

@inproceedings{Montgomery2005TheST,
  title={The Spin Temperature and 21cm Brightness of the Intergalactic Medium in the Pre-reionization Era},
  author={Ryan Montgomery},
  year={2005}
}
We use numerical hydrodynamical simulations of early structure formation in a ΛCDM universe to investigate the spin temperature and 21cm brightness of the diffuse intergalactic medium (IGM) prior to the epoch of cosmic reionization, at z . 20. In the absence of any radiative heating, collisions between neutral hydrogen atoms can efficiently decouple the… CONTINUE READING