The first generation of stars, often called Population III (or Pop III), form from metal-free
primordial gas at redshifts z∼ 30 and below. They dominate the cosmic star-formation …

The formation of the first galaxies during cosmic dawn and reionization (at redshifts z= 5–
30), triggered the last major phase transition of our universe, as hydrogen evolved from cold …

The recent tentative detection by the Experiment to Detect the Global EoR Signature
(EDGES) low band of the hydrogen 21-cm line from cosmic dawn, if confirmed, is the first …

In this review article, we briefly outline our current understanding of the physics associated
with the HI 21-cm signal from cosmic dawn. We discuss different phases of cosmic dawn as …

ABSTRACT The Experiment to Detect the Global Epoch of Reionization Signature (EDGES)
recently reported a strong 21-cm absorption signal relative to the cosmic microwave …

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 …

We investigate the effects of Population III (Pop III) stars and their remnants on the
cosmological 21-cm global signal. By combining a semi-analytic model of Pop III star …

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 …

In this study, we introduce beorn (Bubbles during the Epoch of Reionization Numerical
Simulator), a publicly available python code that generates three-dimensional maps of the …

The flux of high-energy astrophysical γ rays is attenuated by the production of electron-
positron pairs from scattering off of extragalactic background light (EBL). We use the most up …