Most galaxies comparable to or larger than the mass of the Milky Way host hot, X-ray emitting atmospheres and accreting supermassive black holes. Hot atmospheres and radio jets and lobes are the ingredients of radio-mechanical active galactic nucleus (AGN) feedback. At least half of the most massive early-type galaxies harbour multi-phase filamentary gas, which appears to result from the thermally unstable cooling of their hot atmospheres. I will present results based on radio and X-ray observations, which indicate that in massive early-type galaxies with thermally unstable atmospheres, the mechanical jet power correlates with the mass of the central supermassive black hole.
I will introduce the QUVIK (Quick Ultra-VIolet Kilonova surveyor) mission, which has recently been approved for funding. QUVIK, a Czech national science and technology mission, is a UV space telescope designed to study the energetic transient sky. The mission will also provide unique opportunities for studying accreting black holes, including reverberation mapping, tidal disruption events, and peculiar sources in galactic nuclei.
