Impossible Early Galaxy (Part2)

This paper describes a full **engine-like cycle** for a supermassive black hole, turning it from a passive sink into an active, periodic thermodynamic machine. Core idea The black hole plus its magnetically arrested disk (MAD) behaves like a **pressure vessel and piston**. Over tens of millions of years it **intakes**, **compresses**, and then **shatters**, ejecting material and energy back into the galaxy. The cycle step by step 1. **Intake phase (~20 Myr)** - Gas clouds (like G1/G2) slowly fall into the galactic center and feed Sgr A*. - Mass and magnetic flux build up in the disk around the black hole. 2. **Compression phase (~5 Myr)** - As spin energy is extracted (Blandford–Znajek), the inner disk is wound up and magnetically squeezed. - Rotational pressure in the flow rises toward a critical level, while flares and variability increase as the system strains its “casing.” 3. **0.2 Shatter Point (rapid,