"Probes of standard and non-standard cosmology"
The large scale peculiar motions (deviations from a pure Hubble flow) of galaxies are our only probe of the
three-dimensional distribution of the dark matter on large scales. Implications of the observed motions
in the late-time Universe will be discussed, with emphasis on some long term challenges arising from the nature of these observations.
The talk will include a discussion of generic predictions of dark sector modifications to GR for the large scale structure as well as
the dynamics of galactic satellites.