Large Scale Peculiar Velocities from Clusters of Galaxies: Is the Universe tilted?

摘要

Peculiar velocities important provide information about the matter distribution on large scales and the origin of density perturbations. We will review the recent determinations of large scale flows obtained from the kinematic Sunyaev-Zel'dovich effect of clusters of galaxies that generate temperature anisotropics on the Cosmic Microwave Background, as measured by the WMAP satellite. We will describe our latest findings on large scale velocity flows, in particular the so-called Dark Flow, a large scale motion that could encompass the observable Universe. We then discuss its implications for inflationary models.