$Λ$ effect in the cosmological expansion of voids

Details $Λ$ effect in the cosmological expansion of voids $Λ$ effect in the cosmological expansion of voids

2006-07-21

arxiv.org/abs/gr-qc/0607090v5

JCAP 1011:022,2010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

17 pages, 7 figures

Scientific paper

10.1088/1475-7516/2010/11/022

The dynamical effect of the cosmological constant $\Lambda$ on a single spherical void evolving in a the universe is investigated within a non linear perturbation of Newton-Friedmann models. The void expands with a huge initial burst which freezes asymptotically with time up to matching Hubble flow. For $\Omega_{\circ}\sim 0.3$, $\Lambda$-effect on the kinematics intervenes significantly by amplifying the expansion rate at redshift $z\sim 1.7$. As a result, the size increases with the background density and with $\Lambda$, what interprets by the gravitational attraction of borders from outside regions and the gravitational repulsion of borders. The velocity flow within the void region depends solely on $\Lambda$, it reads $\vec{v}=\sqrt{\Lambda/3}\vec{r}$. Hence, the empty regions are swept out for spatially closed Friedmann models what provides us with a stability criterion.

Affiliated with

Also associated with

No associations

Rating

$Λ$ effect in the cosmological expansion of voids 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 $Λ$ effect in the cosmological expansion of voids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and $Λ$ effect in the cosmological expansion of voids will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-169043