Chaotic

Galaxy

Discrete mathematics

Economic system

Computer security

Astrophysics

Unification

Economics

Set (abstract data type)

Computer science

Macro level

Statistical physics

Physics

Mathematics

Macro

Halo

Supermassive black hole

Data science

Artificial intelligence

Combinatorics

Programming language

Disjoint sets

Key (lock)

Nature Astronomy

Black 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.

Linking macro-, meso- and microscales in multiphase AGN feeding and feedback