Astronomy and Astrophysics – Astrophysics
Scientific paper
1995-07-25
Astronomy and Astrophysics
Astrophysics
To appear in XXXth Moriond "Clustering in the Universe". Four, uuencoded, compressed (gzip -9), self unpacking postscript page
Scientific paper
We study the gravitational influence of very large scale structures, as traced by clusters of galaxies, on the Local Group [LG] motion and the large scale flows. We derive from the distribution of Abell clusters within $300~$Mpc/h the overdensity field on a 3--D grid of spacing $5~$Mpc/h, then we solve the Poisson equation for the peculiar potential and finally obtain the peculiar velocity field. Quite interestingly, from this global solution we: i) recover within $\sim 10^o$ the direction of the LG motion in the Cosmic Microwave Background [CMB] frame, ii find that the Great Attractor itself moves wrt to the CMB frame, iii) derive $\beta_c^{-1} \equiv b_c \Omega_0^{-0.6} = 5.3 \pm 0.20$ from a preliminary comparison with the Mark~II catalog of peculiar velocities, iv) derive estimates for the bulk flow in spheres which fairly agree with the level derived from POTENT and the Spiral samples, v) find that the Lauer \& Postman [L\&P] bulk flow has too a large amplitude to be in agreement with our results.
No associations
LandOfFree
Large Scale Peculiar Velocities: Effects from Superclusters 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 Large Scale Peculiar Velocities: Effects from Superclusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large Scale Peculiar Velocities: Effects from Superclusters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-142562