Question about Dark Matter

[EarthlingX]

This is all over the news, might be related :

from http://www.sciencedaily.com/ :
Mysterious Cosmic 'Dark Flow' Tracked Deeper Into Universe

ScienceDaily (Mar. 11, 2010) — Distant galaxy clusters mysteriously stream at a million miles per hour along a path roughly centered on the southern constellations Centaurus and Hydra. A new study led by Alexander Kashlinsky at NASA's Goddard Space Flight Center in Greenbelt, Md., tracks this collective motion -- dubbed the "dark flow" -- to twice the distance originally reported.

Wiki :Dark flow

 

[ramparts]

Completely unrelated, but very interesting. I hadn't seen that yet. Someone (maybe it was you) posted a thread in this forum called "dark flow" where I explained basically what this is about. I'd read a couple of papers that seemed to pretty thoroughly debunk this, but since papers on it are still getting accepted to ApJL (which has a pretty stringent peer review), maybe there's more to it. This new paper is from the authors of the original, though, which is fishy.

EDIT: Actually, I have seen this paper, just a long time ago (it was first posted last September, but is only getting published now). Will have to look into this....

 

[EarthlingX]

Here is an article with many links to different views about the facts, from Discover :
Spooky “Dark Flow” Tracked Deeper Into the Cosmos; No Word on What’s Tugging at Galaxies
( original with links )

A year and a half ago, the team led by Alexander Kashlinsky of NASA proposed the controversial and ominously named “dark flow,” a massive gravitational force that is tugging at galaxy clusters, and that Kashlinsky says could be coming from beyond the limits of our own visible universe. Now the team is back with a follow-up study in The Astrophysical Journal Letters, and Kashlinsky says the team has tracked the dark flow out twice as far as before.

 

[dryson]

Maybe dark matter could be this speculatively speaking. Since gravity is not a particle otherwise we would have found the graviton by now then gravity must be a wavelength maybe even smaller than the gamma wavelength of .1 nm. Maybe gravity is shorter than this maybe around .05 nm in length. When gravity is absorbed by atoms with a high element number and electron count the area that is between the two areas of absorption is dark matter. This is just theory but if gravity is absorbed like gamma radiation is then there would be areas of space that dark matter would be present in. Basically the idea is like taking a six foot long area of dry dirt and placing two steel plates at 2 and 4 feet. he plate will represent the object absorbing the gravity the water is the gravity. When the water is sprayed towards the plates at once from both sides of the plates towards the center piece of dirt the plate blocks the water allowing the dirt to remain dry or the dark matter to be revealed. Otherwise the gravity would penetrate the darkmatter without allowing us to see it.

 

[ramparts]

Maybe dark matter could be this speculatively speaking. Since gravity is not a particle otherwise we would have found the graviton by now

Well that's a hugely controversial and unsupported statement. Why must we have found the graviton by now? We don't expect any of our currently running accelerators to find them, and none of the gravitational wave detectors have been running long enough to find solid gravitational wave signals.

And then even if there doesn't exist a graviton particle, why does that mean it has to be a wavelength? What does it even mean for a force to be a wavelength? *sigh*