5 papers
Precision Analysis of the Local Group Acceleration
Michal Chodorowski, Pawel Ciecielag
We reexamine likelihood analyses of the Local Group (LG) acceleration, paying particular attention to nonlinear effects. Under the approximation that the joint distribution of the…
Local Group Velocity Versus Gravity: Nonlinear Effects
P. Ciecielag, M. Chodorowski, A. Kudlicki
We use numerical simulations to study the relation between the velocity of the Local Group and its gravitational acceleration. This relation serves as a test for the kinematic orig…
Redshift-space density versus real-space velocity comparison
Michal Chodorowski
I propose to compare the redshift-space density field directly to the REAL-SPACE velocity field. Such a comparison possesses all of the advantages of the conventional redshift-spac…
Cosmological density versus velocity-divergence relation in the Zel'dovich approximation
Michal Chodorowski
I derive a relation, both `forward' and `inverse', between the density and the divergence of the peculiar velocity which results from the Zel'dovich approximation. My calculations…
Large-Scale Density--Velocity Relations
Michal Chodorowski
I present recent progress in theoretical modelling of cosmological density--velocity relations in the weakly nonlinear regime. The relations are local, based on rigorous perturbati…