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A program for confidence interval calculations for a Poisson process with background including systematic uncertainties: POLE 1.0
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Nuclear and Particle Physics.
In: Computer Physics Communications, 13- p.Article in journal (Refereed) Submitted
Place, publisher, year, edition, pages
13- p.
Identifiers
URN: urn:nbn:se:uu:diva-90852OAI: oai:DiVA.org:uu-90852DiVA: diva2:163353
Available from: 2003-10-02 Created: 2003-10-02Bibliographically approved
In thesis
1. A Search for Neutrinos from Cosmic Point Sources using AMANDA-B10 with Emphasis on Limit Calculation Techniques
Open this publication in new window or tab >>A Search for Neutrinos from Cosmic Point Sources using AMANDA-B10 with Emphasis on Limit Calculation Techniques
2003 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

A search for cosmic point sources of neutrinos has been performed using data taken in 1999 with the AMANDA-B10 neutrino telescope.

This work describes methods for signal and background separation and the statistical analysis of the final data sample. In particular, the multivariate method Support Vector Machines has been applied to achieve good background rejection while at the same time retaining high signal efficiency.

A grid search covering the complete northern hemisphere revealed no statistical significant excess of events over the expected background from mis-reconstructed cosmic ray induced muons and muons induced by atmospheric neutrinos. Thus, no cosmic point sources of neutrinos have been detected. Upper limits on the neutrino flux for each cell of the grid are presented.

Twenty potential sources of neutrinos chosen among three classes of astronomical objects (Blazars, Super Nova Remnants and Microquasars) have been preselected. Upper Limits on the flux of cosmic neutrinos from those are presented.

The presence of systematic uncertainties makes the calculation of confidence limits an intricate problem. A method is presented which makes it possible to include these uncertainties into the frequentist construction of confidence intervals. Statistical properties of the presented method have been studied.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2003. 160 p.
Series
Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1104-232X ; 889
Keyword
Elementary particle physics, Elementarpartikelfysik
National Category
Subatomic Physics
Identifiers
urn:nbn:se:uu:diva-3591 (URN)91-554-5744-4 (ISBN)
Public defence
2003-10-23, Polhem lecture hall, Ångström Laboratory, Uppsala, 10:15
Opponent
Supervisors
Available from: 2003-10-02 Created: 2003-10-02Bibliographically approved

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