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dc.contributor.advisorDicus, Duane A.en
dc.creatorLeu, Richard Hsueh-Yeeen
dc.date.accessioned2011-07-06T15:46:45Zen
dc.date.available2011-07-06T15:46:45Zen
dc.date.issued2011-05en
dc.date.submittedMay 2011en
dc.identifier.urihttp://hdl.handle.net/2152/ETD-UT-2011-05-3250en
dc.descriptiontexten
dc.description.abstractThe observation of solar and atmospheric neutrino oscillations place bounds on the mass differences. However, these probes are insensitive to the absolute mass. To date, cosmology has provided the best bounds on the total neutrino mass. These bounds are based on a degenerate mass model. With the increasing precision of cosmological data, we investigate the effect of the neutrino mass hierarchy. The precision of the parameter estimates stems from precise observations of the cosmic microwave background. However, the effect of neutrino mass hierarchy on this observation is smaller than the cosmic variance. Therefore, we rely on the measurement of the matter power spectrum for hierarchy effects. We propose the use of importance sampling rather than the commonly used Markov chain Monte Carlo. Importance sampling takes advantage of the microwave background's statistical insensitivity to hierarchy. We present forecasted bounds due to Planck and the proposed CMBPol. We also discuss the needed precision for future galaxy surveys in detecting the effect of neutrino mass hierarchy.en
dc.format.mimetypeapplication/pdfen
dc.language.isoengen
dc.subjectCosmologyen
dc.subjectMassive neutrinoen
dc.subjectNeutrino astrophysicsen
dc.subjectNeutrinos--Massen
dc.subjectDegenerate mass modelen
dc.titleInferencing neutrino mass hierarchy from cosmologyen
dc.date.updated2011-07-06T15:46:50Zen
dc.identifier.slug2152/ETD-UT-2011-05-3250en
dc.contributor.committeeMemberBohm, Arnoen
dc.contributor.committeeMemberChiu, Charlesen
dc.contributor.committeeMemberKomatsu, Eiichiroen
dc.contributor.committeeMemberSitz, Gregen
dc.description.departmentPhysicsen
dc.type.genrethesisen
thesis.degree.departmentPhysicsen
thesis.degree.disciplinePhysicsen
thesis.degree.grantorUniversity of Texas at Austinen
thesis.degree.levelDoctoralen
thesis.degree.nameDoctor of Philosophyen


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