253 Pages

Data analysis for continuous gravitational waves [Elektronische Ressource] : deepest all-sky surveys / von Holger Johannes Pletsch


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Data Analysis for Continuous Gravitational WavesDeepest All-Sky SurveysVon der Fakultat¨ fur¨ Mathematik und Physikder Gottfried Wilhelm Leibniz Universitat¨ Hannoverzur Erlangung des GradesDoktorderNaturwissenschaften–Dr. rer. nat. –genehmigte DissertationvonM.Sc. HolgerJohannesPletschgeboren am 16. August 1982 in Saarburg2009Referent: Prof. Bruce AllenKorreferent: Prof. Bernard F. SchutzTag der Promotion: 04.11.2009AbstractDirect detection of gravitational waves would not only validate Einstein’s theory ofGeneral Relativity but also constitute an important new astronomical tool. Continuousgravitational-wave (CW) signals are expected for instance from rapidly rotating neutronstars. Most such stars are estimated to be electromagnetically invisible, but might bedetected and studied via gravitational waves.This dissertation is concerned with the development, study and application of data-analysis techniques to detect CW signals from previously unknown sources through all-sky surveys over broadest possible ranges of putative source frequencies and frequencytime-derivatives.An all-sky CW search is presented using 510 hours of data from the fourth science run(S4) of the Laser Interferometer Gravitational-wave Observatory (LIGO), covering fre-quencies of 50 to 1500 Hz and linear drifts in frequency.



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Published 01 January 2009
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Language English
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