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The sun's influence on the vertical structure of the ionospheres of Venus and Mars
Girazian, Zachary Richard James
The ionospheres of Venus and Mars are important components of the planet-space boundary that play a major role in atmospheric escape processes. Characterization of these regions reveals the physical processes that control them and provides a foundation for more detailed studies of chemistry, dynamics, and energetics. At both planets the ionosphere…
Observing the Unobservable: Identification and Characterisation of Stealth Coronal Mass Ejections
D'Huys, Elke
In this doctoral thesis we study stealth CMEs: solar coronal mass ejections that are clearly observed in coronagraph data but do not show significant low-coronal or on-disk signatures of eruption. This lack of coronal signatures makes it challenging to determine their source region and predict their trajectory throughout interplanetary space. Comb…
Analyzing the interstellar neutral He bulk flow parameters with IBEX-Lo
Leonard, Trevor W.
Our Sun is immersed in a local galactic environment which is composed of a warm, dilute, and partially ionized gas. Due to the Sun's motion relative to this environment, the interstellar neutral (ISN) gas flows through the heliosphere providing the opportunity to perform in-situ observations of the ISN gas from Earth's orbit. The Interstellar Boun…