Sökning: "dark matter theory"

Visar resultat 1 - 5 av 16 avhandlingar innehållade orden dark matter theory.

  1. 1. Supersymmetric Dark Matter aspects of sfermion coannihilations

    Detta är en avhandling från Stockholm : Fysikum

    Författare :Mia Schelke; Stockholms universitet.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Supersymmetry; Dark Matter; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Sammanfattning : There is very strong evidence that ordinary matter in the Universe is outweighed by almost ten times as much so-called dark matter. Dark matter does neither emit nor absorb light and we do not know what it is. LÄS MER

  2. 2. Cosmological Dark Matter and the Isotropic Gamma-Ray Background Measurements and Upper Limits

    Detta är en avhandling från Stockholm : Department of Physics, Stockholm University

    Författare :Alexander Sellerholm; Stockholms universitet.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; dark matter theory; dark matter simulations; dark matter experiments; isotropic gamma-ray background; Fermi gamma-ray space telescope; NATURAL SCIENCES Physics Astronomy and astrophysics Astroparticle physics; NATURVETENSKAP Fysik Astronomi och astrofysik Astropartikelfysik; Theoretical Physics; teoretisk fysik;

    Sammanfattning : This thesis addresses the isotropic diffuse gamma-ray background, as measured by the Fermi gamma ray space telescope, and its implications for indirect detection of dark matter. We describe the measurement of the isotropic background, including also an alternative analysis method besides the one published by the Fermi-LAT collaboration. LÄS MER

  3. 3. Cosmoparticle Physics and String Theory

    Detta är en avhandling från Stockholm : Department of Physics, Stockholm University

    Författare :Stefan Sjörs; Stockholms universitet.; [2012]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Supersymmetry; dark matter; cosmology; inflation; modifications of gravity; string theory; flux compactifications; perturbative string theory; teoretisk fysik; Theoretical Physics;

    Sammanfattning : This thesis deals with phenomenological and theoretical aspects of cosmoparticle physics and string theory. There are many open questions in these topics. In connection with cosmology we would like to understand the detailed properties of dark matter, dark energy, generation of primordial perturbations, etc. LÄS MER

  4. 4. Calibration of b-tagging and search for Dark Matter Calibration of b-tagging efficiency and search for Dark Matter production in association with heavy flavour quarks with the ATLAS experiment

    Detta är en avhandling från Stockholm : Department of Physics, Stockholm University

    Författare :Anna Shcherbakova; Stockholms universitet.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ATLAS; ATLAS experiment; physics analysis; LHC; Large Hadron Collider; Dark Matter; b-tagging; Physics; fysik;

    Sammanfattning : The Large Hadron Collider (LHC) is the most powerful and complex particle accelerator ever built. The ATLAS and the CMS are the two multipurpose particle detectors at the LHC, designed to cover a wide range of physics measurements. LÄS MER

  5. 5. Investigating the Dark Universe through Gravitational Lensing

    Detta är en avhandling från Stockholm : Department of Astronomy, Stockholm University

    Författare :Teresa Riehm; Stockholms universitet.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cosmology; gravitational lensing; dark matter; galaxies; galaxy clusters; NATURAL SCIENCES Physics Astronomy and astrophysics Astronomy; NATURVETENSKAP Fysik Astronomi och astrofysik Astronomi; astronomi; Astronomy;

    Sammanfattning : A variety of precision observations suggest that the present universe is dominated by some unknown components, the so-called dark matter and dark energy. The distribution and properties of these components are the focus of modern cosmology and we are only beginning to understand them. LÄS MER