Searches for Particle Dark Matter: Dark stars, dark galaxies, dark halos and global supersymmetric fits
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
The identity of dark matter is one of the key outstanding problems in both particle and astrophysics. In this thesis, I describe a number of complementary searches for particle dark matter. I discuss how the impact of dark matter on stars can constrain its interaction with nuclei, focussing on main sequence stars close to the Galactic Centre, and on the first stars as seen through the upcoming James Webb Space Telescope. The mass and annihilation cross-section of dark matter particles can be probed with searches for gamma rays produced in astronomical targets. Dwarf galaxies and ultracompact, primordially-produced dark matter minihalos turn out to be especially promising in this respect. I illustrate how the results of these searches can be combined with constraints from accelerators and cosmology to produce a single global fit to all available data. Global fits in supersymmetry turn out to be quite technically demanding, even with the simplest predictive models and the addition of complementary data from a bevy of astronomical and terrestrial experiments; I show how genetic algorithms can help in overcoming these challenges.
Place, publisher, year, edition, pages
Stockholm: Department of Physics, Stockholm University , 2010. , 84 p.
dark matter, supersymmetry, gamma rays, dwarf galaxies, stellar evolution, cosmological perturbations, phase transitions, statistical techniques
Subatomic Physics Subatomic Physics Astronomy, Astrophysics and Cosmology Subatomic Physics Other Physics Topics Astronomy, Astrophysics and Cosmology Astronomy, Astrophysics and Cosmology
Research subject Theoretical Physics
IdentifiersURN: urn:nbn:se:su:diva-38221ISBN: 978-91-7447-031-4OAI: oai:DiVA.org:su-38221DiVA: diva2:308048
2010-05-04, FD5, AlbaNova universitetscentrum, Roslagstullsbacken 21, Stockholm, 15:15 (English)
Hooper, Dan, Assistant Professor
Edsjö, Joakim, Associate ProfessorBergström, Lars, ProfessorConrad, Jan, Assistant Professor
At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 5: Accepted. Paper 6: Submitted.
List of papers