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Analysis of low frequency whistler wave occurrences in the night-side Venus ionosphere
White, Harold Glenn
This body of work deals with a detailed analysis of plasma, magnetic, and electric field data from Pioneer Venus Orbiter (PVO) to determine if the data are consistent with the possibility of lightning on Venus. This has been a strong topic of debate in the planetary physics community. In a recent Nature article [Ingersoll, 2007], Ingersoll provide…
Microphysics and radiative-dynamical feedback in the near infrared brightness features in the Venus clouds
McGouldrick, Kevin Bartholomew
The goal of this thesis is to understand the causes of the holes that form in the Venus condensational clouds; and to determine the mechanisms that are responsible for their subsequent evolution. Near Infrared observations of the nightside of Venus reveal regions of high brightness temperatures. These regions of high brightness temperatures are ca…
Coronal and transition region observations of the sun and cool stars
Williams, David Ronan
This thesis presents observations of dynamic events in the outer atmosphere of the Sun and other cool stars. The effect of opacity on ratios of strong transition region lines is investigated for the flare dMe star YZ CMi, and the RS CVn binary Capella. Opacity is shown to be both an important effect in these stars' atmospheres and an important dia…
An Observational Study of Helium in the Solar Corona with the EIT Instrument on Board the SOHO Spacecraft
Auchere, F.
Helium is the second most abundant element in the Universe. The understanding of the physicals processes associated with helium as well as the determination of the helium abundance both have implications in various research fields such as cosmology, stellar evolution or the physics of the solar wind. Helioseismology techniques give accurate measur…