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.
Results
Showing 1 to 7 of 7 for “"LCDM"”.
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EoR in alternative cosmological scenarios
… scenario predicted by the commonly used LCDM cosmology. In particular, in this Thesis we have considered two different alternative universes. The first one is a at universe dominated at late epochs by a dynamic dark energy component, characterized by an equation of state evolving in time. …
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Investigating bursty star formation and interstellar medium conditions in low-mass galaxies
… problem within the Lambda Cold Dark Matter (LCDM) model. Observations of neutral hydrogen in low-mass galaxies show a flat central density distribution, contradicting the pure dark matter simulations, which predict a central cusp. However, simulations in small galaxies show that flat density …
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GALAXY-HALO CONNECTION AND CLUSTERING IN THE PRESENCE OF DYNAMICAL DARK ENERGY AND MASSIVE NEUTRINOS
… in cosmologies alternative to the standard LCDM model. To this aim a large set of cosmological N-body simulations has been used, the so-called “Dark Energy and Massive Neutrino Universe” (DEMNUni) project, spanning several cosmological models with different neutrino masses and/or different …
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The inhomogeneous Universe : its average expansion and cosmic variance
… with the one derived from simulations within the LCDM framework. In addition we illustrate, how the Minkowski functionals provide a description of clustering properties, and why this description goes beyond the standard two-point statistics. Minkowski functionals do therefore provide a measure for …
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Implementing a cognitive diagnostic assessment in an institutional test: a new networking model in language testing and experiment with a new psychometric model and task type
… criteria all indicate that the general model (LCDM) and the compensatory-RUM model are the best fit to all three test data sets used. The functioning of the models examined through multiple indices also unanimously confirms these fit indices. Based on these results, a discussion follows to …
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Astrophysical tests of modified gravity
… we find that they are indistinguishable from the LCDM model at the background level but that they may show deviations in the cold dark matter power spectrum that can be probed using upcoming experiments. Finally, we introduce a novel mechanism where a cosmological constant in the form of a …
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Computational Bayesian techniques applied to cosmology
This thesis presents work around 3 themes: dark energy, gravitational waves and Bayesian inference. Both dark energy and gravitational wave physics are not yet well constrained. They present interesting challenges for Bayesian inference, which attempts to quantify our knowledge of the universe …