A search for solar dark matter with the IceCube neutrino telescope
2009 (English)Doctoral thesis, monograph (Other academic)
Dark matter particles in the form of supersymmetric Weakly Interacting Massive Particles (WIMPs) could accumulate in the centre of the Sun because of gravitational trapping. Pair-wise annihilations of WIMPs could create standard model particles out of which neutrinos could reach the Earth. Data from the IceCube 22-string neutrino telescope have been searched for signals from dark matter annihilations in the Sun. Highly sophisticated analysis methods have been developed to discern signal neutrinos from the severe background of atmospheric particle showers. No signal has been found in a dataset of 104 days livetime taken in 2007, and an upper limit has been placed on the muon flux in the South Pole ice induced by neutrinos from the Sun, reaching down to 330 km-2y-1. The flux limit has been converted into an upper limit on the neutralino scattering cross-section, which reaches down to 2.8*10-40 cm2 for spin-dependent interactions.
Place, publisher, year, edition, pages
Stockholm: Department of Physics, Stockholm University , 2009. , 100 p.
Dark matter, neutrinos, neutrino telescopes, IceCube
Research subject Physics
IdentifiersURN: urn:nbn:se:su:diva-27352ISBN: 978-91-7155-881-7OAI: oai:DiVA.org:su-27352DiVA: diva2:213841
2009-05-29, sal FB52, Roslagstullsbacken 21, AlbaNova universitetscentrum, Stockholm, 13:00 (English)
Carr, John, Professor
Hultqvist, Klas, Professor
Four articles are appended to the thesis:
I. G. Wikström for the IceCube collaboration, Proc. of the 30th ICRC,arXiv/0711.0353 [astro-ph] (2007) 135.
II. A. Gross, C. Ha, C. Rott, M. Tluczykont, E. Resconi, T. DeYoung and G. Wikström for the IceCube Collaboration, Proc. of the 30th ICRC,arXiv/0711.0353 [astro-ph] (2007) 11.
III. G. Wikström and J. Edsjö, JCAP 04 (2009) 009.
IV. R. Abbasi et al. (IceCube collaboration), accepted for publication in Phys. Rev. Lett., arXiv/0902.2460v3 [astro-ph.CO] (2009).