O ct 2 00 1 Structure formation in the Lemâıtre-Tolman model

Structure formation within the Lemaˆıtre-Tolman model is investigated in a general manner. We seek models such that the initial density perturbation within a homogeneous background has a smaller mass than the structure into which it will develop, and the perturbation then accretes more mass during evolution. This is a generalisation of the approach taken by… CONTINUE READING