GASPARI, MASSIMOMASSIMOGASPARITombesi, FrancescoFrancescoTombesiCAPPI, MASSIMOMASSIMOCAPPI2021-11-262021-11-2620202397-3366http://hdl.handle.net/20.500.12386/31167Black hole feeding and feedback are often studied disjointly in both observations and simulations. We encourage the adoption of three physically motivated scales, linking them in a tight multiphase self-regulated loop. We pinpoint the key open questions of this unification problem and advocate for a multiwavelength, multiscale and interdisciplinary community.ELETTRONICOenArticle10.1038/s41550-019-0970-12-s2.0-85078620506WOS:000510816200005https://www.nature.com/articles/s41550-019-0970-12020NatAs...4...10GFIS/05 - ASTRONOMIA E ASTROFISICA