Cosmic Web Force Field in and around Clusters

Lelonek, Kasia (2024) Cosmic Web Force Field in and around Clusters. Bachelor's Thesis, Physics.

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Abstract

The problem of mass distribution and flow within the Cosmic Web, a large-scale foam-like structure of walls, filaments, clusters, and voids formed by the distribution of matter throughout the Universe and shaped by gravitational instability and tidal forces, is addressed. The investigation focuses on the clusters and the environment around them seen from an angular perspective, which offers a view into the connectivity and hierarchy in the context of large-scale structure. Clusters, lying at the intersection of a web of filaments, are also the most relevant mass-accreting elements of the Cosmic Web, and provide an insight on the large-scale mass migration. The approach is complemented by a Cartesian overview of the wider structure. The mass distribution was drawn from the Illustris-3-Dark simulation and illustrated using HEALPix projection histograms. The resulting maps were analyzed using spherical harmonics analysis by extracting the power series coefficients, illustrating the reconstructed maps, the residues of the maps upon subtracting the spherical structures, and the power spectra. The results strongly indicate the existence of substructure within the distribution, with more massive clusters indicating more complexity in their environment. It is also confirmed that cluster’s mass correlates to the number of incoming filaments.

Item Type:	Thesis (Bachelor's Thesis)
Supervisor name:	Weijgaert, M.A.M. van de and Roest, D.
Degree programme:	Physics
Thesis type:	Bachelor's Thesis
Language:	English
Date Deposited:	30 Jul 2024 07:04
Last Modified:	30 Jul 2024 07:05
URI:	https://fse.studenttheses.ub.rug.nl/id/eprint/33701

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