Search for dissertations about: "Astronomy"
Showing result 16 - 20 of 540 swedish dissertations containing the word Astronomy.
-
16. The rebirth of Supernova 1987A : a study of the ejecta-ring collision
Abstract : Supernovae are some of the most energetic phenomena in the Universe and they have throughout history fascinated people as they appeared as new stars in the sky. Supernova (SN) 1987A exploded in the nearby satellite galaxy, the Large Magellanic Cloud (LMC), at a distance of only 168,000 light years. READ MORE
-
17. Lyman-alpha imaging of starburst galaxies in the local universe and beyond
Abstract : The last decade has seen huge advances in studies of astrophysical cosmology, primarily as a result of developments in telescopic facilities. One of the primary observational signatures of actively star forming galaxies in the distant universe is the Lyman-alpha emission line (Lyα). READ MORE
-
18. A study of possible chemical inhomogeneities of dwarf irregular galaxies and the influence on the Z-L relationship
Abstract : A study on the chemical abundances of dwarf irregular galaxies (dI's) is presented in this work. This type of galaxies have typically low metallicity. First of all, a definition of dI is proposed, in order to obtain a homogeneous group of targets. READ MORE
-
19. Dissipative formation of galaxies in hierarchical cosmology
Abstract : A description and detailed tests of a numerical code for simulations of galaxy formation is presented. The dynamics is followed with fully adaptive and Lagrangian Smooth Particle Hydrodynamics (SPH) combined with a gravitational tree method. The severe numerical problem of sub-resolution clustering is solved by merging of gas particles. READ MORE
-
20. Global Turbulent EquiPartition (TEP) in Tokamak Plasma
Abstract : We studied analytically and numerically the establishment of global turbulent equipartition (TEP) of magnetised electrons in a tokamak plasma. This allows us to investigate self-consistently the inhomogeneous distributions of the plasma density, the electron and the ion temperatures, the generation of radial electric field and the poloidal and the toroidal rotation in the turbulent tokamak plasma. READ MORE