PROBING THE DARK AGES AT <i>z</i> ∼ 20: THE SCI-HI 21 cm ALL-SKY SPECTRUM EXPERIMENT
PROBING THE DARK AGES AT <i>z</i> ∼ 20: THE SCI-HI 21 cm ALL-SKY SPECTRUM EXPERIMENT
We present first results from the SCI-HI experiment, which we used to measure the all-sky-averaged 21 cm brightness temperature in the redshift range 14.8 < z < 22.7. The instrument consists of a single broadband sub-wavelength size antenna and a sampling system for real-time data processing and recording. Preliminary observations …