Search for dissertations about: "Supernova"

Showing result 1 - 5 of 55 swedish dissertations containing the word Supernova.

  1. 1. 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

  2. 2. Distant supernovae and galaxies in the Stockholm VIMOS Supernova Survey

    University dissertation from Stockholm : Department of Astronomy, Stockholm University

    Author : Laia Mencia Trinchant; Stockholms universitet.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; imaging surveys; photometric redshfits; Lyman Break galaxies; supernova typing; supernova rates; supernova host galaxies; NATURAL SCIENCES Physics Astronomy and astrophysics Astronomy; NATURVETENSKAP Fysik Astronomi och astrofysik Astronomi; astronomi; Astronomy;

    Abstract : Multi colour imaging surveys help astronomers to find galaxies and clusters,and to gain insights on their physical properties and evolution.In this thesis, I present the Stockholm VIMOS Supernova Survey (SVISS), where the ELAIS-S field was observed with VIMOS UBVRI broad-band optical bands over a period of 5 years. READ MORE

  3. 3. Observations of young core collapse supernova remnants

    University dissertation from Stockholm : Department of Astronomy, Stockholm University

    Author : Anestis Tziamtzis; Stockholms universitet.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; supernova remnants; Crab; SN 1987A; NATURAL SCIENCES Physics Astronomy and astrophysics Astronomy; NATURVETENSKAP Fysik Astronomi och astrofysik Astronomi; Astronomy; astronomi;

    Abstract : Studies of young remnants offer an opportunity to test theoretical models of stellar evolution, explosion models and nucleosynthesis, as well as our understanding of the compact objects in the centre of the exploded stars.The first part of the thesis involves observations of the Crab nebula. READ MORE

  4. 4. The Frequency of Supernovae in the Early Universe

    University dissertation from Stockholm : Department of Astronomy, Stockholm University

    Author : Jens Melinder; Stockholms universitet.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; supernovae; supernova typing; supernova rates; photometric redshifts; Lyman Break Galaxies; NATURAL SCIENCES Physics Astronomy and astrophysics Astronomy; NATURVETENSKAP Fysik Astronomi och astrofysik Astronomi; astronomi; Astronomy;

    Abstract : Supernovae are cosmic explosions of cataclysmic proportion that signify the death of a star. While being interesting phenomena in their own right, their brightness also make them excellent probes of the early universe. Depending on the type of the progenitor star and the origin of the explosion different subjects can be investigated. READ MORE

  5. 5. Looking for the high-mass progenitors of stripped-envelope supernovae

    University dissertation from Stockholm University

    Author : Emir Karamehmetoglu; Stockholms universitet.; Stockholms universitet.; [2018]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Supernova; Supernovae; Stripped-envelope supernovae; SN Type Ibc; SN; SNe; SN progenitor; Type Ibn; Astronomy; astronomi;

    Abstract : Stripped-envelope supernovae were thought to be the explosions of very massive stars (& 20 M) that lost their outer layers of hydrogen and/or helium in strong stellar winds. However, recent studies have highlighted that most stripped-envelope supernovae seem to be arising from rela- tively lower-mass progenitor stars in the 12 20 M(sun) range, creating a mystery about the fate of the higher-mass stars. READ MORE