Discrete Matter, Far Fields, and Dark Matter

Details Discrete Matter, Far Fields, and Dark Matter Discrete Matter, Far Fields, and Dark Matter

2009-03-07

arxiv.org/abs/0903.1355v1

Europhys.Lett.83:59002,2008

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

16 pages, 1 figure. LaTex document

Scientific paper

10.1209/0295-5075/83/59002

We show that in cosmology the gravitational action of the far away matter has quite relevant effects, if retardation of the forces and discreteness of matter (with its spatial correlation) are taken into account. The expansion rate is found to be determined by the density of the far away matter, i.e., by the density of matter at remote times. This leads to the introduction of an effective density, which has to be five times larger than the present one, if the present expansion rate is to be accounted for. The force per unit mass on a test particle is found to be of the order of 0.2cH_0. The corresponding contribution to the virial of the forces for a cluster of galaxies is also discussed, and it is shown that it fits the observations if a decorrelation property of the forces at two separated points is assumed. So it appears that the gravitational effects of the far away matter may have the same order of magnitude as the corresponding local effects of dark matter.

Affiliated with

Also associated with

No associations

Rating

Discrete Matter, Far Fields, and Dark Matter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Discrete Matter, Far Fields, and Dark Matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discrete Matter, Far Fields, and Dark Matter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-670706