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 …

In the past five years, deep imaging campaigns conducted with the Hubble Space
Telescope (HST) and ground-based observatories have delivered large samples of galaxies …

We describe new JWST/NIRSpec observations of galaxies at z≳ 7 taken from the CEERS
survey. Previous observations of this area have revealed associations of Lyα emitters at …

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 …

The protagonists of the last great phase transition of the universe—cosmic reionization—
remain elusive. Faint star-forming galaxies are leading candidates because they are found …

We report the discovery of a remarkable Lyα emitting galaxy at z= 7.2782, JADES-GS+
53.16746− 27.7720 (shortened to JADES-GS-z7-LA), with rest-frame equivalent width, EW 0 …

We present a new flexible Bayesian framework for directly inferring the fraction of neutral
hydrogen in the intergalactic medium (IGM) during the Epoch of Reionization (EoR, z∼ 6 …

Abstract The Hydrogen Epoch of Reionization Array (HERA) is a staged experiment to
measure 21 cm emission from the primordial intergalactic medium (IGM) throughout cosmic …

Using some of the latest cosmological data sets publicly available, we derive the strongest
bounds in the literature on the sum of the three active neutrino masses, M ν, within the …

The high-redshift intergalactic medium (IGM) and the primeval galaxy population are rapidly
becoming the new frontier of extragalactic astronomy. We investigate the IGM properties and …