"The influence of streaming velocities on the formation of the first stars and black holes"

The so-called streaming velocities are relative velocities between
baryons and dark matter, originating from a second-order perturbation
effect at recombination. In regions with high streaming velocities,
the halo mass function is shifted to lower masses in the early Universe.
I will give an overview of how streaming velocities delay the formation
of Population III stars and show that regions with high streaming velocity
might be good environments for the formation of direct collapse black holes.