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An absorption profile centred at 78 megahertz in the sky-averaged spectrum
Judd D. Bowman, Alan E. E. Rogers, Raul A. Monsalve +2
After stars formed in the early Universe, their ultraviolet light is expected, eventually, to have penetrated the primordial hydrogen gas and altered the excitation state of its 21…
Results from EDGES High-Band: II. Constraints on Parameters of Early Galaxies
Raul A. Monsalve, Bradley Greig, Judd D. Bowman +5
We use the sky-average spectrum measured by EDGES High-Band ( MHz) to constrain parameters of early galaxies independent of the absorption feature at ~MHz reported by B…
Concerns about Modelling of the EDGES Data
Richard Hills, Girish Kulkarni, P. Daniel Meerburg +1
It is predicted that the spectrum of radio emission from the whole sky should show a dip arising from the action of the light from the first stars on the hydrogen atoms in the surr…