Jeans Mass and the
Growth of Perturbations
Growth of Perturbations
•For a flat
Einstein-de Sitter Universe R(t) ~ t2/3 and you get:
In the case
of a low density universe, the scale factor behaves:
In
this latter case, perturbations are quenched for low z (~1/Ωo).
Low density, makes it hard to grow galaxies.
