Damghan University Press Iranian Journal of Astronomy and Astrophysics 2322-4924 2 2 2015 12 01 Cosmic Walls and Filaments Formation in Modi ed Chaplygin Gas Cosmology عنوان 153 159 32 10.22128/ijaa.2015.32 EN S. Karbasi Department of Physics, University of Qom, Qom, I. R. Iran; H. Razmi Department of Physics, University of Qom, Qom, I. R. Iran; Journal Article 2016 03 12 We want to study the perturbation growth of an initial seed of an ellipsoidal shape in Top-Hat collapse model of the structure formation in the Modi ed 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 non-spherical structure which can be considered as a candidate for justifying the already known cosmological structures as cosmic walls and laments. Structure formation Chaplygin gas Non-spherical collapse Cosmic walls Filaments https://ijaa.du.ac.ir/article_32_28c04bc944a0557ca2ad35aae851da70.pdf