Ionized gas extends over 40 kpc in an odd radio circle host galaxy.

A new class of extragalactic astronomical sources discovered in 2021, named odd radio circles (ORCs), are large rings of faint, diffuse radio continuum emission spanning approximately 1 arcminute on the sky. Galaxies at the centres of several ORCs have photometric redshifts of z ≃ 0.3-0.

Discovery of spectacular quasar-driven superbubbles in red quasars.

Quasar-driven outflows on galactic scales are a routinely invoked ingredient for galaxy formation models. We report the discovery of ionized gas nebulae surrounding three luminous red quasars at ~ 0.4 from Gemini integral field unit observations.

A 100-kiloparsec wind feeding the circumgalactic medium of a massive compact galaxy.

Ninety per cent of baryons are located outside galaxies, either in the circumgalactic or intergalactic medium. Theory points to galactic winds as the primary source of the enriched and massive circumgalactic medium. Winds from compact starbursts have been observed to flow to distances somewhat greater than ten kiloparsecs, but the circumgalactic medium typically extends beyond a hundred kiloparsecs.