We report the most sensitive upper limits to date on the 21 cm epoch of reionization power
spectrum using 94 nights of observing with Phase I of the Hydrogen Epoch of Reionization …

We report upper limits on the Epoch of Reionization 21 cm power spectrum at redshifts 7.9
and 10.4 with 18 nights of data (∼ 36 hr of integration) from Phase I of the Hydrogen Epoch …

Cosmic dawn, the onset of star formation in the early universe, can in principle be studied
via the 21-cm transition of neutral hydrogen, for which a sky-averaged absorption signal …

The observation of the global 21 cm signal produced by neutral hydrogen gas in the
intergalactic medium (IGM) during the Dark Ages, Cosmic Dawn, and Epoch of Reionization …

A redshifted 21 cm line absorption signature is commonly expected from the cosmic dawn
era, when the first stars and galaxies formed. The detailed traits of this signal can provide …

Global 21-cm experiments aim to measure the sky-averaged H i absorption signal from
cosmic dawn and the epoch of reionization. However, antenna chromaticity coupling to …

Apart from its anomalously large depth, the cosmological 21-cm absorption signal measured
by the EDGES collaboration also has a shape that is distinctly different from theoretical …

We develop a Bayesian model that jointly constrains receiver calibration, foregrounds, and
cosmic 21 cm signal for the EDGES global 21 cm experiment. This model simultaneously …

Accurately accounting for spectral structure in spectrometer data induced by instrumental
chromaticity on scales relevant for detection of the 21-cm signal is among the most …

There exist inevitable deviations in the cosmic microwave background spectrum from that of
a blackbody. The additive distortions from photons emitted over the epoch of recombination …