• Numerical studies of Supernova Remnants 

      Andresen, Haakon (Master thesis, 2013)
      Supernovae are very luminous events, on the scale of entire galaxies, and deposit mass and large amounts of energy in to the surrounding interstellar medium. In this workthe effect of a supernova on the surrounding medium ...
    • Particle Production in Gravitational Fields 

      Bauer, Dag-Vidar Krogstad (Master thesis, 2013)
      In this thesis, we discuss the phenomenon of particle production in gravitational fields. We present the general framework in flat Friedmann-Robertson-Walker spacetimes and apply it to an asymptotically static model in two ...
    • Plasma Instabilities in Electron-Positron Pair Beams from Blazars 

      Hornkjøl, Martin (Master thesis, 2018)
      The non-detection of an electromagnetic cascade in the electron-positron plasma beams from blazars has led many physicists to invoke an intergalactic magnetic eld that de ects charged particles away from our eld of view. ...
    • Simulating Particle Cascades in the Search for Dark Matter using Cosmic Neutrino Observations 

      Kluge, Gert (Master thesis, 2019)
      Vi fremfører en prosedyre for å simulere partikkelkaskader med anvendelser innen søk etter mørk materie og neutrinoastronomi. Vi motiveres av de fortløpende utviklingene ved neutrino-observatoriet IceCube, som har gjort ...
    • Superdense dark matter clumps 

      Dokuchaev, V; Berezinsky, V; Eroshenko, Y; Kachelriess, Michael; Solberg, Marius Aase (Journal article; Peer reviewed, 2011)
      We describe the cosmological scenario for the formation of superdense dark matter clumps. As an interesting particular example the case of superheavy neutralino as DMparticles is considered. The small-scale superdense ...
    • The Diffuse Synchrotron Radio Background from Normal Spiral Galaxies in the Context of the ARCADE Excess 

      Stieng, Lars Einar (Master thesis, 2013)
      In this thesis, the possibility that synchrotron radiation from cosmic ray electrons in normal spiral galaxies can account for the ARCADE excess is investigated. The ARCADE excess is an excess flux measured in the sky ...
    • The propagation and energy losses of ultra high energy cosmic rays 

      Lundanes, Ingvild Olsen (Master thesis, 2011)
      This project investigates the propagation of ultra-high energy cosmic raynuclei and protons. A simulation of the propagation subjecting the particlesto energy losses due to cosmological redshift as well as interactions ...
    • Transition from Galactic to Extragalactic Cosmic Rays 

      Kachelriess, Michael (Journal article; Peer reviewed, 2019)
      The question at which energy the transition from Galactic to extragalactic cosmic rays takes place has been a long-standing conundrum in cosmic ray physics. In the past, the transition energy has been usually associated ...