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 “"phase space structure"”.
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Phase Space Structure of Disequilibrium in the Milky Way
… Gaia Data Release 2, observations of spiral structure in the vertical phase space of the Milky Way have been made. In this thesis we set out to explain these structures, using a combination of analytic modeling, simulations, and Dynamic Mode Decomposition to study explicitly their formation …
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Finding and exploiting structure in complex systems via geometric and statistical methods
… system can be understood by analyzing the phase space structure of that system. We apply geometric and statistical techniques to two Hamiltonian systems to find and exploit structure in the phase space that helps us get qualitative and quantitative results about the phase space transport. …
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How to Accurately Map the Milky Way with a Billion Sources: A Journey into the Gaia-verse
Accurately modelling the phase-space distribution of Milky Way sources relies on two vital components: unbiased distance estimators and survey selection functions. Without either, models are susceptible to significant systematic uncertainties. My case study of the tilt of the local velocity …
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Nonlinear Models and Geometric Structure of Fluid Forcing on Moving Bodies
… and methods for analyzing the geometric structure within those and other mathematical models. This manuscript style dissertation presents three works within the theme of understanding fluid forcing and geometric structure. When a bluff body is free to move in the presence of an incoming …
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Chaotic diffusion in nonlinear Hamiltonian systems
… theory could not be found due to the complicated phase space structure in this case. Nevertheless, it is hoped that the techniques and results presented in this work will help to eventually understand this controversely discussed case as well.
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Geometrical Investigation on Escape Dynamics in the Presence of Dissipative and Gyroscopic Forces
… the dissipative and gyroscopic forces change the phase space structure that governs the escape (or transition) from potential wells. In higher degree of freedom systems, the motion between potential wells is complicated due to the existence of multiple escape routes usually through an index-1 …