Anisotropic Hubble expansion of large scale structures
  We investigate the dynamics of an homogenous distribution of galaxies moving under the cosmological expansion through Euler-Poisson equations system. The solutions are interpreted with the aim of understanding the cosmic velocity fields in the Local Super Cluster, and in particular the presence of a bulk flow. Among several solutions, we shows a planar kinematics with constant (eternal) and rotational distortion, the velocity field is not potential. 
Henri-Hugues Fliche (LMMT), Jean-Marie Souriau (CPT), Roland Triay   (CPT)