Ever deeper and wider look-back surveys have led to a fairly robust outline of the cosmic
star-formation history, which culminated around; this period is often nicknamed “cosmic …

For the past 400 years, astronomers have sought to observe and interpret the Universe by
building more powerful telescopes. These incredible instruments extend the capabilities of …

The NANOGrav 15 yr data set shows evidence for the presence of a low-frequency
gravitational-wave background (GWB). While many physical processes can source such low …

We present measurements of black hole masses and Eddington ratios (λ Edd) for a sample
of 38 bright (M 1450<− 24.4 mag) quasars at 5.8≲ z≲ 7.5, derived from Very Large …

Several pulsar timing array (PTA) collaborations, including NANOGrav, EPTA, PPTA, and
CPTA, have announced the evidence for a stochastic signal consistent with a stochastic …

Our current knowledge of cosmic star-formation history during the first two billion years
(corresponding to redshift z> 3) is mainly based on galaxies identified in rest-frame …

Galaxy mergers are expected to have a significant role in the mass assembly of galaxies in
the early universe, but there are very few observational constraints on the merger history of …

In anticipation of the new era of high-redshift exploration marked by the commissioning of
the James Webb Space Telescope (JWST), we present two sets of galaxy catalogues that …

Understanding the variability of galaxy star formation histories (SFHs) across a range of time-
scales provides insight into the underlying physical processes that regulate star formation …

Massive black hole (MBH) coalescences are powerful sources of low-frequency gravitational
waves. To study these events in the cosmological context, we need to trace the large-scale …