Distinctive rings in the 21 cm signal of the epoch of reionization
Context. It is predicted that sources emitting UV radiation in the Lyman band during the epoch of reionization show a series of discontinuities in their Ly alpha flux radial profile as a consequence of the thickness of the Lyman-series lines in the primeval intergalactic medium. Through unsaturated Wouthuysen-Field coupling, these spherical discontinuities are also present in the 21 cm emission of the neutral IGM.
Keywords: radiative transfer ; methods: numerical ; intergalactic medium ; large-scale structure of Universe ; dark ages, reionization, first stars ; Simulating Cosmic Reionization ; Probe Wmap Observations ; High-Redshift Universe ; Lyman-Series Photons ; Intergalactic Medium ; Radiative-Transfer ; 21-Cm Line ; Large Scales ; Fluctuations ; Galaxies
Record created on 2011-12-16, modified on 2016-08-09