A Search For Muon Neutrinos Coincident With Gamma-Ray Bursts Using IceCube

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dc.contributor.advisorHoffman, Karaen_US
dc.contributor.authorRichman, Michael Daviden_US
dc.contributor.departmentPhysicsen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2015-06-25T05:45:06Z
dc.date.available2015-06-25T05:45:06Z
dc.date.issued2015en_US
dc.description.abstractWe present constraints derived from a search of four years of IceCube data for a prompt neutrino flux from gamma-ray bursts (GRBs). A single low-significance neutrino was found in coincidence with one of the 506 observed bursts, consistent with the expectation from atmospheric backgrounds. Although GRBs have been proposed as candidate sources for ultra-high energy cosmic rays, our limits on the neutrino flux disfavor much of the parameter space for the latest models. We also find that no more than ~1% of the recently observed astrophysical neutrino flux consists of prompt emission from GRBs that are potentially observable by existing satellites. These results currently represent world-leading constraints on a prompt neutrino flux from GRBs. In this thesis, we also introduce an original machine learning software package called pybdt. This implementation is now the de facto standard tool for machine-learning-based classification in IceCube analyses. Finally, we describe an extension of the unbinned likelihood method used in past searches to allow for the combination of data from different detector configurations with different background characteristics in the calculation of model constraints.en_US
dc.identifierhttps://doi.org/10.13016/M2CS5W
dc.identifier.urihttp://hdl.handle.net/1903/16477
dc.language.isoenen_US
dc.subject.pqcontrolledAstrophysicsen_US
dc.subject.pquncontrolledcosmic rayen_US
dc.subject.pquncontrolledgamma-ray bursten_US
dc.subject.pquncontrolledIceCubeen_US
dc.subject.pquncontrolledneutrinoen_US
dc.titleA Search For Muon Neutrinos Coincident With Gamma-Ray Bursts Using IceCubeen_US
dc.typeDissertationen_US

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