Dynamics of Large Scale Structure: phase correlations

Kugel, Roi (2018) Dynamics of Large Scale Structure: phase correlations. Bachelor's Thesis, Astronomy.

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Abstract

This thesis looks at using the Fourier phases as a method of describing cosmic structure formation. In previous efforts it was pointed out that structure appears in the Fourier phases as expansion factor increases. We identify the cosmological structure responsible for the majority of the phase structure and provide a quantity that quantifies the structure found in the Fourier phases. This quantity, and thus also the phase structure, relates to the very extremes of the density field. For cosmological simulations these are mostly overdensities. We also look at using phase shifts and provide a way of comparing phase shift results for different models. Both models were tested for invariance and are independent of initial coordinates. We also provide a way of making any phase field invariant under translations by use of the Taylor invariant.

Item Type:	Thesis (Bachelor's Thesis)
Supervisor name:	Weijgaert, M.A.M. van de
Degree programme:	Astronomy
Thesis type:	Bachelor's Thesis
Language:	English
Date Deposited:	13 Jul 2018
Last Modified:	20 Jul 2018 12:29
URI:	https://fse.studenttheses.ub.rug.nl/id/eprint/17867

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