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Cosmic Minivoids in the Intergalactic Medium
Avery Meiksin
The Gunn-Peterson effect, absorption of Lya photons by a homogeneous component of the intergalactic medium (IGM), potentially provides a test of Big Bang Nucleosynthesis (BBN). Wit…
Spectral Analysis of the Lyman Alpha Forest in a Cold Dark Matter Cosmology
Yu Zhang, Peter Anninos, Michael L. Norman +1
We simulate the Lya forest in a standard CDM universe using a 2-level hierarchical grid code to evolve the dark and baryonic matter components self-consistently. We solve the time-…
21-cm Tomography of the Intergalactic Medium at High Redshift
Piero Madau, Avery Meiksin, Martin J. Rees
We investigate the 21-cm signature that may arise from the intergalactic medium (IGM) prior to the epoch of full reionization (z>5). In scenarios in which the IGM is reionized by d…
Two-Phase Cooling Flows with Magnetic Reconnection
Colin Norman, Avery Meiksin
Motivated by the observations of high Faraday rotation measures measured in cooling flow clusters we propose a model relevant to plasmas with comparable thermal and magnetic pressu…
Cosmological Filaments and Minivoids: The Origin of Intergalactic Absorption
Yu Zhang, Avery Meiksin, Peter Anninos +1
Soon after the first QSO was identified, Gunn & Peterson searched for the expected characteristic absorption trough on the blueward side of Lya in the spectrum of the QSO due to an…