Galaxy Formation -- a Condensation Process just after Recombination
Abstract
A scenario of galaxy formation is put forward which is a process of sudden condensation just after recombination. It is essentially based on the fact that the cosmic matter gas after recombination is a general relativistic Boltzmann gas which runs within a few
10
6
years into a state very close to collision--dominated equilibrium. The mass spectrum of axially symmetric condensation "drops" extends from the lower limit M about
10
5
solar masses to the upper limit M about
10
12
solar masses. The lower limit masses are spheres whereas the upper limit masses are extremely thin pancakes. These pancakes contract within a time of about
2.5⋅
10
9
y
to fastly rotating spiral galaxies with ordinary proportions. In this final state they have a redshift z about 3. At an earlier time during their contraction they are higly active and are observed with a redshift z about 5.