Radiation, winds, and jets from the active nucleus of a massive galaxy can interact with its
interstellar medium, and this can lead to ejection or heating of the gas. This terminates star …

In a growing number of galaxy clusters diffuse extended radio sources have been found.
These sources are not directly associated with individual cluster galaxies. The radio …

The Review summarizes much of particle physics and cosmology. Using data from previous
editions, plus 3,062 new measurements from 721 papers, we list, evaluate, and average …

The eROSITA telescope array aboard the Spektrum Roentgen Gamma (SRG) satellite
began surveying the sky in December 2019, with the aim of producing all-sky X-ray source …

We examine the temperature history of gas accreted by forming galaxies in smoothed
particle hydrodynamics simulations. About half of the gas follows the track expected in the …

Observations of the high-redshift Universe with the 21cm hyperfine line of neutral hydrogen
promise to open an entirely new window onto the early phases of cosmic structure formation …

We review the possible mechanisms for the generation of cosmological magnetic fields,
discuss their evolution in an expanding Universe filled with the cosmic plasma and provide a …

This is a review of models of inflation and of their predictions for the primordial non-
Gaussianity in the density perturbations which are thought to be at the origin of structures in …

We analyze the physical conditions of the cool, photoionized (T∼ 10 4 K) circumgalactic
medium (CGM) using the COS-Halos suite of gas column density measurements for 44 …

Cosmological simulations of galaxy formation appear to show a" two-phase" character with a
rapid early phase at z≳ 2 during which" in situ" stars are formed within the galaxy from …