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 bulk of cosmic matter resides in a dilute reservoir that fills the space between galaxies,
the intergalactic medium (IGM). The history of this reservoir is intimately tied to the cosmic …

We compute the expected X-ray diffuse background and radiative feedback on the
intergalactic medium (IGM) from X-ray binaries prior to and during the epoch of reionization …

Imaging the Universe during the first hundreds of millions of years remains one of the
exciting challenges facing modern cosmology. Observations of the redshifted 21 cm line of …

Massive black holes (BHs) are at once exotic and yet ubiquitous, residing at the centers of
massive galaxies in the local Universe. Recent years have seen remarkable advances in …

The transformation of cold neutral intergalactic hydrogen into a highly ionized warm plasma
marks the end of the cosmic dark ages and the beginning of the age of galaxies. The details …

We present measurements of the evolution of normal-galaxy X-ray emission from $
z\quad\approx $0–7 using local galaxies and galaxy samples in the≈ 6 Ms Chandra Deep …

JCW had long wanted to write a new monograph on supernovae. Despite an immense
explosion in the literature and many review articles, there had not been one since that of …

We study the formation of massive Population III binary stars using a newly developed
radiation hydrodynamics code with the adaptive mesh refinement and adaptive ray-tracing …

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 …