Search for dissertations about: "institutionen för astronomi."

Showing result 1 - 5 of 396 swedish dissertations containing the words institutionen för astronomi..

  1. 1. Young stars and outflows : case studies of three different regions

    University dissertation from Stockholm : Institutionen för astronomi

    Author : Magnus Gålfalk; Stockholms universitet.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Star formation; Young stars; Outflows; NATURAL SCIENCES Physics Astronomy and astrophysics Astronomy; NATURVETENSKAP Fysik Astronomi och astrofysik Astronomi; Astronomy; astronomi;

    Abstract : Mass is clearly the most important parameter of a star as it determines the phases it will go through, its physical parameters, the elements produced and its life span. Two important processes that occur simultaneously in young stars are directly related to the final mass a star ends up with; the accretion of material onto the star from a circumstellar disk and the bipolar outflow of material from the star. READ MORE

  2. 2. Observations of supernovae and their compact objects

    University dissertation from Stockholm : Institutionen för astronomi

    Author : Jesper Sollerman; Stockholms universitet.; [2000]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Physics Astronomy and astrophysics Astronomy; NATURVETENSKAP Fysik Astronomi och astrofysik Astronomi; Astronomy; astronomi;

    Abstract : .... READ MORE

  3. 3. Spectral and Temporal Studies of Gamma-Ray Bursts

    University dissertation from Stockholm : Institutionen för astronomi

    Author : Luis Borgonovo; Stockholms universitet.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Physics Astronomy and astrophysics; NATURVETENSKAP Fysik Astronomi och astrofysik; Astronomy; astronomi;

    Abstract : Gamma-ray bursts (GRBs) are sporadic flashes of light observed primarily in the gamma-ray band. Being the brightest explosions in the Universe since its birth, they are at present also the furthest astronomical sources detected. READ MORE

  4. 4. The rebirth of Supernova 1987A a study of the ejecta-ring collision

    University dissertation from Stockholm : Institutionen för astronomi

    Author : Per Gröningsson; Stockholms universitet.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; supernovae; SN 1987A; circumstellar matter; shock waves; NATURAL SCIENCES Physics Astronomy and astrophysics; NATURVETENSKAP Fysik Astronomi och astrofysik; Astronomy; astronomi;

    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

  5. 5. Lyman-alpha imaging of starburst galaxies in the local universe and beyond

    University dissertation from Stockholm : Institutionen för astronomi

    Author : Matthew Hayes; Stockholms universitet.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Physics Astronomy and astrophysics; NATURVETENSKAP Fysik Astronomi och astrofysik; Astronomy; astronomi;

    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