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 …

Abstract Recently, the Hydrogen Epoch of Reionization Array (HERA) has produced the
experiment's first upper limits on the power spectrum of 21 cm fluctuations at z∼ 8 and 10 …

Despite extensive search efforts, direct observations of the first [Population III (Pop III)] stars
have not yet succeeded. Theoretical studies have suggested that late Pop III star formation is …

ABSTRACT The Murchison Widefield Array (MWA) team has derived new upper limits on the
spherically averaged power spectrum of the 21-cm signal at six redshifts in the range z≈ 6.5 …

The first stars, galaxies, star clusters, and direct-collapse black holes are expected to have
formed in low-mass (∼ 105–109 M⊙) haloes at Cosmic Dawn (z∼ 10–30) under conditions …

Recent upper bounds from the Hydrogen Epoch of Reionization Array on the cosmological
21-cm power spectrum at redshifts z≈ 8, 10, have been used to constrain LX< 2 keV/SFR …

The non-linear process of cosmic structure formation produces gravitationally bound
overdensities of dark matter known as halos. The abundances, density profiles, ellipticities …

In recent years, several analytic models have demonstrated that simple assumptions about
halo growth and feedback-regulated star formation can match the (limited) existing …

The redshifted 21 cm signal from neutral hydrogen is a direct probe of the physics of the
early universe and has been an important science driver of many present and upcoming …

Cosmic rays generated by supernovae carry away a significant portion of the lifetime energy
emission of their parent star, making them a plausible mechanism for heating the early …