Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Helioseismology"”.
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Theoretical investigations in helioseismology
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1990.
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On effective field theory of dark matter
… discrepancy between the observations of helioseismology and the theoretical Standard Solar Model. We introduce all of the necessary theoretical implementation and show that, although introducing dark matter may alleviate the tension of the solar abundance problem, the required interaction …
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Shear instabilities in stellar objects: linear stability and non-linear evolution
… suggest a stable tachocline. However, helioseismology can only provide large-scale time-averaged measurements, so small scale turbulent motions can still be present. Therefore, studying the stability of shear flows and their non-linear evolution in a fully compressible polytropic …
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Scale selection in hydromagnetic dynamos
… scale selection of dynamo action. Although helioseismology has made a lot of progress in the study of the solar interior, the precise motions of plasma are still unknown. In this work, we assume that the model flow is forced with helical viscous body forces acting on different characteristic …
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Atmospheric responses to flare generated sunquakes
This thesis presents the results of the first detection of an atmospheric response to a flare induced Sunquake (SQ). Ground-based observations of the Ca II 8542 Å and H-α 6563 Å passbands from the Swedish 1-m Solar Telescope (SST) were used in combination with space-based observations from the …
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Kopplung globaler Eigenschwingungen der Sonne durch Konvektion
Der Einfluss von grossskaligen Stroemungskomponenten auf globale adiabatische solare Oszillationen wird mit Hilfe von Stoerungstheorie untersucht. Stationaere poloidale Komponenten fuehren zu Frequenzverschiebungen, die von der Stroemungsamplitude und der Differenz der Frequenzquadrate zweier …