In April 2016 Manchester eScholar was replaced by the University of Manchester’s new Research Information Management System, Pure. In the autumn the University’s research outputs will be available to search and browse via a new Research Portal. Until then the University’s full publication record can be accessed via a temporary portal and the old eScholar content is available to search and browse via this archive.

Related resources

Search for item elsewhere

University researcher(s)

Academic department(s)

Dark Energy And Large Scale Structure

Pediani, Steven

[Thesis]. Manchester, UK: The University of Manchester; 2011.

Access to files

FULL-TEXT.PDF (pdf)

Abstract

Currently one of the most exciting problems in cosmology is the nature of dark energy,which is responsible for the late time accelerated expansion of the universe. Darkenergy modifies the distance-redshift relation, and governs the late time evolution ofgravitational potentials in the universe. Therefore by observing large scale structurewe can gain valuable information on the nature of dark energy. In this thesis we examinea particular theory of dark energy, known as elastic dark energy. Using weaklensing and the ISW effect, coupled with CMB and SNIa data, we find lower boundsfor the sound speed of elastic dark energy. We also explore how this model behaves inthe presence of collapsing matter.