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Probing the effect of dark matter velocity distributions on neutrino-based dark matter detection
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics. (IceCube)
2019 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Dark matter has a long history, but it was not until modern times that we have a chance of detecting it. This thesis focuses on the velocity distribution and its effect on indirect WIMP detection. Recently a new velocity distribution, based on data from SDSS and GAIA, was proposed. For this reason simulation of capture, annihilation and resulting flux of neutrinos from the Sun and Earth has been made both for the new and Maxwell-Boltzmann velocity distribution. The newly proposed velocity can reduce the annihilation rate in Earth by two thirds. For the Sun the effect depends on the mass of the WIMPs. For 50 GeV WIMPs the newly proposed velocity distribution could increase the annihilation rate by 5%, while for 3 TeV WIMPs it could decrease the annihilation rate by 28%. For Earth and high mass WIMPs the low velocity tail is the important part and the low resolution of this region in the new velocity distribution result in some uncertainties.

Place, publisher, year, edition, pages
2019. , p. 22
Series
UPTEC F, ISSN 1401-5757 ; 19055
Keywords [en]
Dark matter, WIMPs, velocity distribution, indirect detection
National Category
Subatomic Physics Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-395645OAI: oai:DiVA.org:uu-395645DiVA, id: diva2:1363821
Educational program
Master Programme in Engineering Physics
Supervisors
Examiners
Available from: 2019-10-29 Created: 2019-10-22 Last updated: 2019-10-29Bibliographically approved

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Subatomic PhysicsAstronomy, Astrophysics and Cosmology

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CiteExportLink to record
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  • apa
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