Chandra's contribution to understanding galaxy clusters and AGN feedback

Most galaxies host massive black holes at their centres. Energy released by accreting black holes in the forms of radiation, winds, and jets has regulated the growth of galaxies and their nuclear black holes since galaxies began to form shortly after the Big Bang. Over the past 25 years, the Chandra X-ray Observatory has revealed the enormous power released by radio jets launched by accreting black holes, and how jets prevent runaway galaxy growth by a remarkably gentle feeeback process that has shaped galaxies into their present forms. I will show new high resolution X-ray spectra of cluster atmospheres obtained with the XRISM observatory. Complementing the high resolution imagery from Chandra, XRISMs high spectral resolution calorimeter spectrometer is revealing for the first time atmospheric gas dynamics and clues to how radio jets heat the surrounding gas.