The existence of nonzero neutrino masses points to the likely existence of multiple Standard
Model neutral fermions. When such states are heavy enough that they cannot be produced …

Recent observations have granted to us two unique insights into the early Universe: the
presence of a low-frequency stochastic gravitational wave background detected by the …

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 high-redshift galaxy UV luminosity function (UVLF) has become essential for
understanding the formation and evolution of the first galaxies. Yet, UVLFs only measure …

We infer the evolution of the UV luminosities of galaxies in haloes of masses 10 10–10 11
M⊙ in the redshift range of z∼ 9–16 from the recent JWST data. Within the standard ΛCDM …

While astrophysical and cosmological probes provide a remarkably precise and consistent
picture of the quantity and general properties of dark matter, its fundamental nature remains …

Context. Warm dark matter is a possible alternative to cold dark matter to explain
cosmological structure formation. Aims. We study the implications of the latest JWST data on …

The epochs of cosmic dawn and reionization present promising avenues for understanding
the role of dark matter (DM) in our cosmos. The first galaxies that populated the universe …

The early-science observations made by the James Webb Space Telescope (JWST) have
revealed an excess of ultramassive galaxy candidates that appear to challenge the standard …

Constraining the distribution of small-scale structure in our universe allows us to probe
alternatives to the cold dark matter paradigm. Strong gravitational lensing offers a unique …