The Bullet cluster
and Abell 520 Galaxy cluster collision, seem to be examples of the clumping
of dark matter systems (=black hole networks of dual Galaxy Anchor black holes
; GABHs) during galaxy passage through the center of the collision.
Galaxies seem to
leave behind their Galaxy Anchor Black Holes, ( GABHs),In line with my Quantum
FFF model.
Quotation of
Wikipedia on Abell 520: “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.
So I would postulate
that dark matter is related to black holes and second: Dark matter BHs have
less inertia effects than fermionic matter.