Model for common growth of supermassive black holes, bulges and globular star clusters: ripping off Jeans clusters

TL;DR

This paper proposes a model where galaxies originate from Jeans clusters of micro brown dwarfs, leading to simultaneous formation of supermassive black holes, bulges, and globular clusters through tidal heating and coagulation processes.

Contribution

It introduces a unified model explaining the co-evolution of black holes, bulges, and globular clusters based on Jeans clusters and tidal interactions, a novel approach in galaxy formation theories.

Findings

Black holes and bulges form together from Jeans clusters.

Star formation rates peak at specific black hole and bulge masses.

JCs assist in black hole mergers by overcoming the last parsec barrier.

Abstract

It is assumed that a galaxy starts as a dark halo of a few million Jeans clusters (JCs), each of which consists of nearly a trillion micro brown dwarfs, MACHOs of Earth mass. JCs in the galaxy center heat up their MACHOs by tidal forces, which makes them expand, so that coagulation and star formation occurs. Being continuously fed by matter from bypassing JCs, the central star(s) may transform into a super massive black hole. It has a fast $t^3$ growth during the first mega years, and a slow $t^{1/3}$ growth at giga years. JCs disrupted by a close encounter with this black hole can provide matter for the bulge. Those that survive can be so agitated that they form stars inside them and become globular star clusters. Thus black holes mostly arise together with galactic bulges in their own environment and are about as old as the oldest globular clusters. The age 13.2 Gyr of the star HE 1523-0901 puts forward that the Galactic halo was sufficiently assembled at that moment. The star formation rate has a maximum at black hole mass $\sim4 \ 10^7M_\odot$ and bulge mass $\sim5\,10^{10}M_\odot$. In case of merging supermassive black holes the JCs passing near the galactic center provide ideal assistance to overcome the last parsec.