Search for dissertations about: "Cosmology"

Showing result 1 - 5 of 350 swedish dissertations containing the word Cosmology.

  1. 1. Gravitational perturbations in plasmas and cosmology

    University dissertation from Umeå : Institutionen för Fysik

    Author : Mats Forsberg; Umeå universitet.; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; general relativity; cosmology; gravitational waves; plasma; electromagnetic waves; nonlinear waves; NATURAL SCIENCES Physics Geocosmophysics and plasma physics Plasma physics; NATURVETENSKAP Fysik Geokosmofysik och plasmafysik Plasmafysik; NATURAL SCIENCES Physics Other physics Theory of relativity; gravitation; NATURVETENSKAP Fysik Övrig fysik Relativitetsteori; gravitation; NATURAL SCIENCES Physics Astronomy and astrophysics Cosmology; NATURVETENSKAP Fysik Astronomi och astrofysik Kosmologi; teoretisk fysik; Theoretical Physics;

    Abstract : Gravitational perturbations can be in the form of scalars, vectors or tensors. This thesis focuses on the evolution of scalar perturbations in cosmology, and interactions between tensor perturbations, in the form of gravitational waves, and plasma waves. READ MORE

  2. 2. Relativistic fireworks cosmology

    University dissertation from Stockholm : Stockholm University

    Author : Lennart Widlund; Stockholms universitet.; [1994]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fyrverkeri;

    Abstract : .... READ MORE

  3. 3. Spectral Properties of Type Ia Supernovae and Implications for Cosmology

    University dissertation from Stockholm : Department of Physics, Stockholm University

    Author : Jakob Nordin; Stockholms universitet.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; cosmology; spectroscopy; supernovae; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik; NATURAL SCIENCES Physics Astronomy and astrophysics Cosmology; NATURVETENSKAP Fysik Astronomi och astrofysik Kosmologi; NATURAL SCIENCES Physics Astronomy and astrophysics Extragalactical astronomy; NATURVETENSKAP Fysik Astronomi och astrofysik Extragalaktisk astronomi; fysik; Physics;

    Abstract : Type Ia supernovae can, for a short period of time, reach the same brightness as an entire galaxy. They are responsible for the creation of a large fraction of all heavy elements and can be used, as standard candles, to prove that the expansion of the universe is accelerating. Yet, we do not fully understand them. READ MORE

  4. 4. Type Ia Supernova Cosmology Quantitative Spectral Analysis

    University dissertation from Stockholm : Fysikum

    Author : Gastón Folatelli; Stockholms universitet.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Supernova; Cosmology; Spectroscopy; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Abstract : Type Ia supernovae have been successfully used as standardized candles to study the expansion history of the Universe. In the past few years, these studies led to the exciting result of an accelerated expansion caused by the repelling action of some sort of dark energy. READ MORE

  5. 5. Observations of distant supernovae and cosmological implications

    University dissertation from Stockholm : Fysikum

    Author : Rahman Amanullah; Stockholms universitet.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; cosmological parameters; cosmology; astro physics; supernovae; type Ia supernova; NATURAL SCIENCES Physics Astronomy and astrophysics Cosmology; NATURVETENSKAP Fysik Astronomi och astrofysik Kosmologi;

    Abstract : Type Ia supernovae can be used as distance indicators for probing the expansion history of the Universe. The method has proved to be an efficient tool in cosmology and played a decisive role in the discovery of a yet unknown energy form, dark energy, that drives the accelerated expansion of the Universe. READ MORE