The first Intermediate Black Hole found inside M4 Starcluster of the Milky Way.

According to Q-FFF Theory, Intermediate Black Hole like the M4 Black Hole, fits nicely into the String Black Hole system called 2e, 3e- or smaller  Galaxy Anchor Black Holes (GABHs) being the remnants of the proto -dual Herbig Haro system of one of the GABHs of the earlier merger galaxies of the Milky way, left behind as Star cluster. M4. see:  "Hubble hunts for intermediate-sized black hole close to home."

 https://esahubble.org/news/heic2306/

Star cluster M92, around one of the 2e stage GABHs in the milky way..

Andromeda hotspot dual GABH black holes of 1e first GABHs (O) and 2e stage former mergers see: https://www.sci.news/astronomy/article01159-black-hole-andromeda-galaxy.html

Not only overdensities but also Dark Spots seem to be originated by the evaporating and splitting black hole system of the big bang.

The Origin of the Big Bang being the explosion of the former Big Crunch Dark Matter String Black Hole. (Q-FFF Model)

The Origin of the Big Bang being the explosion of the former Big Crunch Dark Matter String Black Hole. (Q-FFF Model)

According to the Quantum Function Follows Form model, all particles are based on rigid but resilient transformer strings, the origin of resilient Dark Energy vacuum.
Black holes are described as Penrose-Q-FFF systems of String Black Holes compressed by the oscillating local dark energy string vacuum, which is the origin of the Casimir effect en one part of the Q-Gravity together with the opposing Graviton string produced by all Fermions.

The origin of the Big Bang explosion seems the decreased vacuum pressure on the former big Crunch string nucleus, by the consumption of the oscillating Dark Energy vacuum by that Big Crunch string Black Hole.
see: 

Primordial Black Holes and dual Herbig Haro Effects for Star-Galaxy formation.

https://vixra.org/pdf/2101.0158v1.pdf

https://vixra.org/author/leo_vuyk

and: The Electric Universe by Electric Dark Matter Big Bang Black Holes of Quantum FFF Theory.

https://vixra.org/pdf/1902.0349v1.pdf

and: Big Bang Energy out of Nothing, or a Compressed Rigid String Nucleus.

https://vixra.org/pdf/1811.0002v1.pdf

and: The Raspberry Shaped Multiverse, Pulsating Between Big Crunch and Big Bang, Based on Rigid Transformable Massless Axion Higgs Particles.

https://vixra.org/pdf/1711.0379v2.pdf

and: Splitting Dark Matter Black Hole Big Bang as the Origin of Ultra-Energetic-Cosmic-Rays-From Far-Away.

https://vixra.org/pdf/1709.0388v1.pdf

and: 2 Signals for Retarded Single Big Bang Black Hole Nucleus Splitting and Pairing into Dual Black Hole Herbig Haro Systems

https://vixra.org/pdf/1704.0133v2.pdf

and: Signals for Retarded Big Bang Black Hole Nucleus Splitting and Pairing Into Dual Black Hole Based Quasar and Herbig Haro Systems.

https://vixra.org/pdf/1503.0186v6.pdf

and: The Splitting Dark Matter- Black Hole- Big Bang and the Cyclic Multiverse.

https://vixra.org/pdf/1306.0065v2.pdf

The Transformable Ring String of the vacuum is changing its shape by the collision with the propeller rotation of Fermions (along a Calabi Yau surface) into photons gluons ( eigen energy). Local time is related to the spin of Fermions, so a black hole without fermions has no local time.

Two colliding vacuum particle rings can change form into dual fermions.

Photon trajectories with the Black/White hole in the middle by Casimir pressure.

Below: Why the star formation stops (quencing) after 800 years of the big bang?

Q-FFF Model says: it is too early for Super Nova explosions producing smaller Starspot black holes (former Comets) for small star formation systems sequences..

The origin of X-shaped Nebula of young- or exploding stars and comparable disc Galaxy effects between Dual Herbig Haro Black Holes..

The dual black hole Herbig Haro systems of the Q-FFF model, seems reason to change the name of all the well accepted central Galaxy (or Star) Black Holes or AGNs (Active Galactic Nuclei: Quasars and Blazers) (SABHs/GABHs) into a White Hole, responsible for MW disc matter processing into the dual Jet acceleration and the dual polar x-gamma ray Fermi bubbles..
According to Q-FFF Theory, the vacuum polarization around stars and simple disc Galaxy nuclei are the same, due to the dual Herbig Haro black holes at a distant polar position.
The virtual oscillating Dark Energy Axion vacuum around both polar HH black holes is suggested to polarize the vacuum bending and the local gravity into one focus point at the center between both Black Holes. (SABHs or GABHs)

As a result, it seems that the well known Milky Way Black Hole should not be called a Black Hole, but a White Hole.

Secondly, both new physics black holes are the originators of the electric and plasma driven Birkeland electric Current carrousel between both Herbig Haro Black Holes. 

see also: The Origin of X-Shaped nebula, (hourglass vacuum polarization) by Gravitational Vacuum vacuum polarization (Lensing) of dual distant SABHs (Q-FFF Theory.) see: https://bigbang-entanglement.blogspot.com/2023/05/the-origin-of-x-shaped-nebula-hourglass.html

Below: What is reality: The Fermion Repelling central Black or White Hole of M87.? 

Vectorization and Axion- Higgsfield quantum curves (gravity forces) of virtual space between dual Herbig Haro Black Holes. see the X-oer hourglass shape in the center.

The Penrose-Q-FFF new Black Hole creating and repelling all Fermion particles in dual charged horizon layers.  In our universe, the outside layer is negative charged and inside positive electric charged. forming the Birkeland current carrousel.

Below: Quasars or Blazars with a White Hole in the middle between two distant HH black holes.

Evidence for multiple merged dual Herbig Haro Black Holes (GABHs) influencing (enlarging and complexing ) the Bulge of the original disc Andromeda Galaxy. For the recent find of a medium sized Black Hole found in the center of a starcluster see: https://esahubble.org/news/heic2306/

According to Q-FFF model, these medium sized BHs seem to be the remnants of former dual distant Herbig Haro BHs (2/3e etc. GABHs) of Merged Galaxies. Which is an extra support for the dual GABHs Herbig Haro Black Hole systems needed for star and galaxy formation and Birkeland systems like the Heliosphere.

Black holes come in several sized of compressed string knot nuclei even down to ball lightning.

How the Herbig Haro black Hole systems are created by equal sized dual Penrose-Q-FFF black holes

The Origin of X-Shaped nebula, (hourglass vacuum polarization) by Gravitational Vacuum Lensing of dual distant SABHs (Q-FFF Theory.)

Two first SABHs or Stellar Anchor Black Holes seem to be distant and polar oriented at all stars and even Galaxies (GABHs) according to Q-FFF Theory.
Below, the dark matter center of M87 could better be interpreted as  Black/White hole of the hourglass polarized vacuum to understand the X-shaped (or hourglass) Nebula of dead- and protostars..
see: Primordial Black Holes and dual Herbig Haro Effects for Star-Galaxy formation.
https://vixra.org/pdf/2101.0158v1.pdf

Many single Hourglass shaped Nebula around dying stars are found in space. explained by the new physics of Q-FFF Theory.

Hourglass nebula.

Each Transformer String, is based on 3x local hinges between 4x Macaroni Strings as  alternative for the Standard Model.

Each Transformer String, is based on 3x local hinges between 4x Macaroni Strings as  alternative for the Standard Model. see Axion hinge proposal.