Search for dissertations about: "naturvetenskap fysik astronomi"
Showing result 1 - 5 of 591 swedish dissertations containing the words naturvetenskap fysik astronomi.
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1. Spectral Properties of Type Ia Supernovae and Implications for Cosmology
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
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2. Searches for Particle Dark Matter : Dark stars, dark galaxies, dark halos and global supersymmetric fits
Abstract : The identity of dark matter is one of the key outstanding problems in both particle and astrophysics. In this thesis, I describe a number of complementary searches for particle dark matter. READ MORE
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3. Aspects of the Duality between Supersymmetric Yang-Mills Theory and String Theory
Abstract : This thesis deals with three topics related to the Ads/CFT correspondence. In Paper I, solutions describing the geometry of fractional D1-branes of Type IIB string theory are presented. The running coupling constant is computed on the gauge theory side. READ MORE
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4. Arithmetic and Hyperbolic Structures in String Theory
Abstract : This thesis consists of an introductory text followed by two separate parts which may be read independently of each other. In Part I we analyze certain hyperbolic structures arising when studying gravity in the vicinity of spacelike singularities (the BKL-limit). READ MORE
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5. Magnetic fields around massive protostars as traced by masers and dust emission
Abstract : It is not fully clear how the magnetic field acts during the first stages of star formation. A possible way to clarify its role is to observe the polarized light coming from masers and thermal dust emission. READ MORE
