Dear Yousuf Khan:

On Nov 6, 3:26*pm, Yousuf Khan wrote:
dlzc wrote:
Dark Fluid has *no* properties that are substantially
improved over Dark Matter. *It *must* substantially
decay into the definition of Dark Matter in the final
analysis. *It can have no properties associated with
a fluid (say viscosity, or pressure), or it violates
what we see.

Well, this article isn't talking about "Dark Fluid" but
"Dark Fields". Different theories, though I don't know
what the explanation of Dark Fields are supposed to be
yet. The only explanation is that it is an extension of
MOND to account for cluster deficiencies.


It doesn't fix microlensing, so it is a patch to a flawed model.

But getting back to Dark Fluid, why do you say it
violates what we see? Dark Fluid is supposed to be
a complete alternative to MOND, Dark Matter
and Dark Energy, so the fact that it "decays" into
something similar to Dark Matter is exactly what it
was supposed to do at some particular scale.

Then it is Dark Matter, and no solution.

Dark Energy is a repulsive force, Dark Matter an
attractive force, both acting on the same medium
albeit at different scales.

Either that, or Dark Energy is an attractive force at "short" scale,
to provide the local anomalies (non-expansion) from global expansion
due to the cosmological constant.

Those would indicate fluidic behaviour.

Behavior that is disallowed by observation.

....
Now what I'd like to propose is, if inertia derives
from all the mass in the Universe (ala Mach), and
the speed of *this* effect (establishment of
inertia) is large-but-finite, what if Dark Matter is
simply "echos" of an effect of the event horizons
(say) that spent time in any given bit of space?
*Expansion also looks like everything shrinking in
place (due to increasing clock rates). *I mean if
we are sky-balling...

For that matter, we could even theorize that Dark
Matter and Dark Energy is just standard gravity's
symmetry breaking as the Universe cools
toward absolute zero, turning into two different
forces: a super-gravity and an anti-gravity.

Dark Matter was present at the time the CMBR quenched, and Dark Energy
was too I believe. So it has nothing to do with "being cold", as
distinct from "cooling". But since cooling is an effect of
expansion... the cart is trying to pull itself.

David A. Smith