Abell 520 Galaxy cluster collision (2) , is a clear example of the clumping of dark matter (black holes)

SO: Erik Verlinde is half right: there are no stable dark matter particles, there are only stable new physics dark matter black holes: Galaxy Anchor Black Holes (outside and inside galaxies) and smaller ones.
The size? probably  down to Sunspots and even Cometary nuclei.
see: http://vixra.org/pdf/1611.0226v1.pdf
Abell 520 Galaxy cluster collision, is a clear example of the clumping of dark matter (black holes) during  galaxy passage through the center of the collision.
Galaxies lost their Galaxy Anchor Black Holes, ( GABHs)
In line with Quantum FFF model.

Quotation of  Wikipedia: “The dark matter collected into a "dark core" containing far fewer galaxies than would be expected if the dark matter and galaxies hung together.
Most of the galaxies apparently have sailed far away from the collision.
This result could present a challenge to basic theories of dark matter, which predict that galaxies should be anchored to the invisible substance, even during the shock of a collision “
see also: Bullet cluster with central DM core.
http://bigbang-entanglement.blogspot.nl/2016/11/galaxy-cluster-merging-and-vacuum.html

Below: Evidence of Galaxy Anchor Black Holes: (dSph) escorting the Milky Way as a support for MW flat rotation curves and being a merger spiral galaxy with multiple dSph GABHs

Some consequences: 

Black hole gravity and Fermion gravity is not equivalent in Q-FFF Theory.
Quantum Gravity on a black hole nucleus is adopted to be the result of only a single particle based axion/Higgs field (Casimir alike) pressure.
Quantum gravity on Fermionic matter is a the result of a combined pressure force between opposing Axion/Higgs vacuum pressure and (anti) Graviton pressure. see: http://vixra.org/abs/1103.0024

Quantum Gravity and Electro Magnetic Forces by Dual Repulsive Vacuum Oscillation Spectra in FFF-Theory.

Even the Equivalence between Quantum gravity and acceleration does not hold in Q-FFF Theory.