Dark matter interactions with electrons or protons during the early Universe leave imprints
on the cosmic microwave background and the matter power spectrum, and can be probed …

At low redshift, only about one-tenth of the known baryons lie in galaxies or the hot gas seen
in galaxy clusters and groups. Models posit that these “missing baryons” are in gaseous …

We estimate the 21 cm radio background from accretion onto the first intermediate-mass
black holes between z≈ 30 and z≈ 16. Combining potentially optimistic, but plausible …

Context. The hot plasma in a galaxy cluster is expected to be heated to high temperatures
through shocks and adiabatic compression. The thermodynamical properties of the gas …

ABSTRACT The Milky Way hosts a hot (≈ 2× 10 6 K), diffuse, gaseous halo based on
detections of z= 0 O vii and O viii absorption lines in quasar spectra and emission lines in …

We present high-resolution X-ray spectra of 14 putative cooling-flow clusters of galaxies
obtained with the Reflection Grating Spectrometer on XMM-Newton. The clusters in the …

Observations of the cosmic microwave background indicate that baryons account for 5 per
cent of the Universe's total energy content. In the local Universe, the census of all observed …

We derive predictions from state-of-the-art cosmological galaxy simulations for the spatial
distribution of the hot circumgalactic medium (CGM,[0.1–1] R 200c) through its emission …

We consider the consequences of a neutral dark-matter particle with a nonzero electric
and/or magnetic dipole moment. Theoretical constraints, as well as constraints from direct …

Most of the baryons from galaxies have been" missing" and several studies have attempted
to map the circumgalactic medium (CGM) of galaxies in their quest. We report on X-ray …