cosmic walls and filaments formation in modied chaplygin gas cosmology

We want to study the perturbation growth of an initial seed of an ellipsoidal shape in tophat collapse model of the structure formation in the modied chaplygin gas cosmology. considering reasonable values of the constants and the parameters of the model under study, we can show that a very small deviation from spherical symmetry (ellipsoidal geometry) in the initial seed leads to a nal highly nonspherical structure which can be considered as a candidate for justifying the already known cosmological structures as cosmic walls and laments.