  We discuss the local density fluctuations which arise due to the topological
defects that appear after the phase transition of light pseudo-Goldstone
bosons. It has been found that in a post-inflationary universe the fluctuations
of these defects at large scales may have led to galaxy formation, while being
consistent with the measurements of the cosmic microwave background radiation.
Here we show that, at the local level, the fluctuations may be sufficiently
large to lead to the production of smaller structures (ie quasars) with the
observed distribution, which peaks at $z=2$ and drops rapidly for higher
redshifts. Moreover it may be possible that a limited number of quasars are
produced at redshifts of order 10, much earlier than what hot and cold dark
matter scenarios predict. Although in this letter we work in the parameter
space which is optimal for the generation of large scale structure as well,
these features are generic for a wide class of domain wall models.
