A search for time dependence in astrophysical neutrino sources with the Sudbury Neutrino Observatory

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A search for time dependence in astrophysical neutrino sources with the Sudbury Neutrino Observatory

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dc.contributor.advisor Klein, Joshua Richard, 1966-
dc.creator Anthony, Aubra Elan
dc.date.accessioned 2012-10-08T19:33:23Z
dc.date.available 2012-10-08T19:33:23Z
dc.date.created 2008-12
dc.date.issued 2012-10-08
dc.identifier.uri http://hdl.handle.net/2152/18221
dc.description.abstract In this thesis I present the results of a periodicity study on the neutrino data collected over the span of the first two phases of SNO, at both low (1 day⁻¹ - 0.1 yr⁻¹) and high (1 day⁻¹ - 0.1 min⁻¹) frequency ranges. The high frequency study is the first of its kind, and is of particular interest in that it opens a window into the detection of solar g-mode oscillations, which have never been conclusively experimentally verified. In a data set with 7,646 neutrino candidates over a period of 698.29 live days, there was no detected high-frequency periodic signal. In addition to a wide-range, single-peak high-frequency search, I have performed a directed-region frequency analysis, and a noise-motivated broad-band analysis. All searches indicate an absence of periodicity in the 8B solar neutrino signal as measured by SNO. I have also carried out an analysis of time dependence in the context of a trigger-less burst search, with the motivation of either observing neutrinos from an optically occluded supernova, or setting an upper limit on the senstitivity of our detector for such an observation. I include discussions of backgrounds to such a search that are specific to a heavy-water Cherenkov detector such as SNO.
dc.format.medium electronic
dc.language.iso eng
dc.rights Copyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.
dc.subject.lcsh Neutrino astrophysics
dc.subject.lcsh Sudbury Neutrino Observatory
dc.title A search for time dependence in astrophysical neutrino sources with the Sudbury Neutrino Observatory
dc.description.department Physics
dc.type.genre Thesis
dc.type.material text
thesis.degree.department Physics
thesis.degree.discipline Physics
thesis.degree.grantor The University of Texas at Austin
thesis.degree.level Doctoral
thesis.degree.name Doctor of Philosophy

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