Mostrando ítems 1-8 de 8
de Cruz Pérez, Javier (Fecha de defensa: 2021-04-16)
En aquesta tesi s’estudien diferents models cosmològics, tots ells caracteritzats per considerar, de manera efectiva, una lleu evolució temporal de l’Energia Fosca, en contrast amb l’actual model ...
Añez López, José Ignacio (Fecha de defensa: 2021-05-05)
In this thesis, we are aimed to better understand the massive star formation process paying special attention to the role of the magnetic field. To do this, we will carry out a multi-scale analysis with ...
Triantafyllou, Nikolaos (Fecha de defensa: 2021-11-12)
The standard cosmological model, ΛCDM, with the addition of an early inflationary phase, provides an accurate description of a nearly flat and homogeneous Universe, at large scales, which expands ...
Castro Ginard, Alfred (Fecha de defensa: 2021-04-30)
Open clusters are groups of stars, gravitationally bound together, that were born from the same molecular cloud and, thus, share similar positions, kinematics, ages and metallicities. Traditional methods ...
Molina Lumbreras, Edgar (Fecha de defensa: 2021-09-29)
Some binary systems consisting of a compact object, which can be either a neutron star or a black hole, and typically a non-degenerate companion star, have been shown to emit broadband radiation from ...
Illa Subiña, Marc (Fecha de defensa: 2021-09-09)
Nuclei make up the majority of the visible matter in the Universe; obtaining a first principles description of the nuclear properties and interactions between nuclei directly from the underlying theory ...
Katanaeva, Alisa (Fecha de defensa: 2021-02-10)
AdS/CFT correspondence combines ideas of holography and duality in a way that allows one to make calculations in the otherwise hardly accessible (strongly coupled) regime of the target theory. In this ...
Escrivá Mañas, Alberto (Fecha de defensa: 2021-06-21)
This thesis has been devoted to the study of the gravitational collapse of spherically symmetric perturbations on a Friedman-Robertson-Walker (FRW) universe filled by a perfect fluid. Large cosmological ...