Context. Large-scale environment is one of the main physical drivers of galaxy evolution.
The densest regions at high redshifts (ie z> 2 protoclusters) are gas-rich regions …

Galaxy protoclusters are sites of rapid growth, with a high density of massive galaxies
driving elevated rates of star formation and accretion onto supermassive black holes. Here …

Context. High-redshift radio (-loud) galaxies (HzRGs) are massive galaxies with powerful
radio-loud active galactic nuclei (AGNs) and serve as beacons for protocluster identification …

We present rest-frame optical JWST/NIRSpec IFU spectroscopy of TN J1338− 1942 at z=
4.1, one of the most luminous galaxies in the early universe with powerful extended radio …

The molecular gas in the interstellar medium (ISM) of star-forming galaxy populations
exhibits diverse physical properties. We investigate the CO excitation of 12 dusty luminous …

Studies of galaxy protoclusters yield insights into galaxy cluster formation complementary to
those obtained via" archaeological" studies of present-day galaxy clusters. Submillimeter …

Hot dust-obscured galaxies (hot DOGs) are a population of hyperluminous, heavily
obscured quasars discovered by the Wide-field Infrared Survey Explorer all-sky survey at …

We present Atacama Compact Array (ACA) Band-3 observations of the protocluster
SPT2349 $-$56, an extreme system hosting ${\gtrsim}\, 12$ submillimeter galaxies (SMGs) …

Observations of Faraday rotation and synchrotron emission in galaxy clusters imply large-
scale magnetic fields with $\mu\mathrm {G} $ strengths possibly extending back to $ z= 4 …

Observational advances have allowed the detection of galaxies, protoclusters, and galaxy
clusters at higher and higher redshifts, opening a new view into extreme galaxy evolution. I …