Search for dissertations about: "supernovae: general"

Showing result 1 - 5 of 10 swedish dissertations containing the words supernovae: general.

2. 1. Supernovae under the gravitational lens

   Author : Christofer Gunnarsson; Joakim Edsjö; Tereasa Brainerd; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cosmology; Cosmology; Kosmologi;

   Abstract : With general relativity as its foundation, the Standard Model of Cosmology has been developed, a model in which all matter is homogeneously and isotropically distributed throughout the Universe. We know for sure that this is not true since inhomogeneous structures such as galaxies, planets and synthesizers, are known to exist on small cosmological scales. READ MORE

4. 2. The Advanced Spectral Leakage (ASL) scheme for simulations of merging neutron stars

   Author : Davide Gizzi; Stephan Rosswog; Evan O'Connor; Albino Perego; Carla Fröhlich; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; hydrodynamics; radiative transfer; neutrinos; stars: neutron; supernovae: general; Astronomy; astronomi;

   Abstract : The detection of a blue macronova following the event GW170817 has emphasized the role that neutrinos play in merging neutron stars. In particular, neutrinos are able to drive mass ejection, the so-called neutrino-driven winds, and change the neutron richness of the matter by absorption. READ MORE

5. 3. Chemical Abundance Analysis of Population II Stars : The Summary Includes a Background in General Astronomy

   Author : Karin Jonsell; Bengt Gustafsson; Bengt Edvardsson; Paul Barklem; Christopher Sneden; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Astronomy; Astronomy; Galactic evolution; Halo; Milky Way; Oxygen; r-element; s-element; Stellar abundances; Astronomi; Astronomy and astrophysics; Astronomi och astrofysik;

   Abstract : We are made of stardust in the sense that most atomic nuclei around us have been formed by stars. Stars synthesise new elements and expel them to the interstellar medium, from which later new generations of stars are born. We can map this chemical evolution by analysing the atmospheric contents of old Galactic halo stars. READ MORE

6. 4. Investigating the origin of radio emission in nearby starburst galaxies via high-resolution metre and centimetre observations

   Author : Eskil Varenius; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; galaxies: individual: M 82; galaxies: starburst; galaxies: individual: Arp 220; stars: supernovae; galaxies: individual: NGC 4418; radio continuum: galaxies; techniques: high angular resolution;

   Abstract : Star formation and galaxy evolution are intimately linked together. A detailed understanding of the physics of star formation can help us explain how galaxies evolve into, for example, our present Milky Way. READ MORE

7. 5. Cosmic tests of massive gravity

   Author : Jonas Enander; Edvard Mörtsell; Stefan Hofmann; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Modified gravity; massive gravity; cosmology; dark energy; dark matter; fysik; Physics;

   Abstract : Massive gravity is an extension of general relativity where the graviton, which mediates gravitational interactions, has a non-vanishing mass. The first steps towards formulating a theory of massive gravity were made by Fierz and Pauli in 1939, but it took another 70 years until a consistent theory of massive gravity was written down. READ MORE