Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Concordance model"”.
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A disformally coupled quintessence mimicking the ΛCDM background
Although the currently-accepted Concordance model of the Universe has been very successful observationally, it cannot resolve two main issues. Firstly, it cannot untangle the unknown nature of the cosmological constant in the Einstein Field Equations, which is responsible for the accelerated …
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Large Quasar Groups at Redshift ~ 2
… the compatibility of these structures with the concordance model in cosmology; to identify low redshift LQGs for investigation of the galaxy and cluster environments of quasars; to investigate whether correlations exist between LQGs and other cosmological sources, such as gamma ray bursters, the …
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Investigating the properties of gamma ray bursts and gravitational wave standard sirens as high redshift distance indicators
… commonly faulted for ad hoc assumptions and models with very little discriminating observational evidence, cosmologists are continually trying, and in many cases succeeding, to improve both the data and models. However, the desire to support currently favoured models often dominates research …
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Bent tail radio sources as tracers of galaxy clusters at high redshift and SMBH mass estimates
… cosmological probes. According to the _ CDM model, galaxy clusters form around redshift of z _ 2 and finding clusters of halo mass greater than 1014 M_ at redshift greater than z = 2:5 would disprove the current concordance model. Finding galaxy clusters at those redshifts is more feasible …
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Simulations of Galaxy Formation and Large Scale Structure
… simulations may be combined with semi-analytic models for the baryonic physics associated with galaxy formation. Gravity is a long range force, and it turns out that length scales of 100 Mpc or more have to be included in large scale structure simulations in order to obtain results that are …
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Computational Bayesian techniques applied to cosmology
… vacuum dark energy equation of state $w {=} -1$ model. Deviations from vacuum dark energy are shown to favour the super-negative ‘phantom’ dark energy regime of $w {<} -1$, but at low statistical significance. The constraining power of various datasets is quantified, finding that data constraints …