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Hydrodynamical Simulations of the Lyman Alpha Forest: Model Comparisons
M. E. Machacek, G. L. Bryan, A. Meiksin +4
We investigate the properties of the Lyman alpha forest as predicted by numerical simulations for a range of currently viable cosmological models. This is done in order to understa…
The First Light seen in the redshifted 21-cm radiation
Paolo Tozzi, Piero Madau, Avery Meiksin +1
We show how the investigation of the redshifted 21-cm radiation can give insight into the development of structures in the early universe (at redshifts z>5). In particular we inves…
The Lyman Alpha Forest in Hierarchical Cosmologies
M. Machacek, G. Bryan, P. Anninos +3
The comparison of quasar absorption spectra with numerically simulated spectra from hierarchical cosmological models of structure formation promises to be a valuable tool to discri…
Radio Signatures of HI at High Redshift: Mapping the End of the ``Dark Ages''
Paolo Tozzi, Piero Madau, Avery Meiksin +1
The emission of 21-cm radiation from a neutral intergalactic medium (IGM) at high redshift is discussed in connection with the thermal and ionization history of the universe. The p…
The Dark Ages: Searching for the Epoch of First Light
A Meiksin
Prior to the epoch of full reionization, the intergalactic medium and gravitationally collapsed systems will be detectable in 21-cm radiation. Physical mechanisms that would produc…