Search for dissertations about: "institutionen för astronomi."

Showing result 16 - 20 of 340 swedish dissertations containing the words institutionen för astronomi..

  2. 16. Spectral and Temporal Studies of Gamma-Ray Bursts

    Author : Luis Borgonovo; Claes-Ingvar Björnsson; Jerry Fishman; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Astronomy and astrophysics; 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. 17. The rebirth of Supernova 1987A : a study of the ejecta-ring collision

    Author : Per Gröningsson; Claes Fransson; John Danziger; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; supernovae; SN 1987A; circumstellar matter; shock waves; Astronomy and astrophysics; 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. 18. Lyman-alpha imaging of starburst galaxies in the local universe and beyond

    Author : Matthew Hayes; Göran Östlin; Matthew Lehnert; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Astronomy and astrophysics; 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

  6. 19. X-ray emission from supernova shock waves

    Author : Tanja Nymark; Claes Fransson; Cecilia Kozma; Jacco Vink; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Astronomy and astrophysics; Astronomi och astrofysik; Astronomy; astronomi;

    Abstract : A theoretical study of the interaction between supernovae and their surroundings is presented.Supernovae are the endpoint of the life of massive stars, and are the dominant contributors to the chemical evolution of the Universe. During its life a massive star greatly modifies its environment. READ MORE

  7. 20. Numerical simulations of type III planetary migration

    Author : Adam Peplinski; Pawel Artymowicz; Garrelt Mellema; John Papaloizou; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; planetary system formation; Astronomy and astrophysics; Astronomi och astrofysik; Astronomy; astronomi;

    Abstract : Planets are believed to form in primordial gas-dust discs surrounding newborn stars. An important breakthrough in our understanding of planetary formation was the discovery of extra-solar planets around sun-like stars, especially the frequent occurrence of giant planets on close orbits (hot Jupiters). READ MORE