A relativistic approach to nonlinear peculiar velocities and the Zeldovich approximation

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Minor changes, accepted by Phys. Rev. D

Scientific paper

10.1103/PhysRevD.66.124015

We study the peculiar motion of non-relativistic matter in a fully covariant way. The exact nonlinear equations are derived and then applied to the case of pressure-free matter, moving relatively to a quasi-Newtonian Eulerian frame. Our two-frame formalism facilitates the study of the nonlinear kinematics of the matter, as the latter decouples from the background expansion and starts to ``turn around'' and collapse. Applied to second perturbative order, our equations provide a fully covariant formulation of the Zeldovich approximation, which by construction addresses the mildly nonlinear regime of structure formation. Employing a dynamical system approach, we show that, just like in the Newtonian case, the relativistic treatment also predicts that pancakes are the natural end-structures for any generic overdensity.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

A relativistic approach to nonlinear peculiar velocities and the Zeldovich approximation 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 A relativistic approach to nonlinear peculiar velocities and the Zeldovich approximation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A relativistic approach to nonlinear peculiar velocities and the Zeldovich approximation will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-500010

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.