Honors Theses and Capstones
Date Completed
Spring 2023
Abstract
We surveyed magnetic field data from the Ulysses spacecraft and found examples of magnetic waves with characteristics that point to excitation by newborn pickup He+. With interstellar neutrals as the likely source for the pickup ions, we have modeled the ion production rates and used them to produce wave excitation rates that we compare to the background turbulence rates. The source ions are thought to be always present, but the waves are seen when growth rates are comparable to or exceed the turbulence rates. With the exception of the fast latitude scans, and unlike the waves excited by newborn interstellar pickup H+, the waves are seen throughout the Ulysses orbit.
Были использованы наблюдения магнитного поля из магнитометра на спутнике Улисс чтобы найти примеры низкочастотных магнитных волн в результате рассеивания ионов гелия, которые называются pickup ions (PUIs). Считается, что всегда есть волны, но они только видны, когда скорость роста волновой энергии больше, чем турбулентность. Гелиевые волны были измерены по всей орбите Улисса.
First Advisor
Charles Smith
Second Advisor
Ekaterina Burvikova
College or School
CEPS
Department or Program
Physics, Russian
Degree Name
Bachelor of Science
Recommended Citation
Marchuk, Anastasia V., "Low Frequency Waves Due to He+ as Observed by the Ulysses Spacecraft" (2023). Honors Theses and Capstones. 774.
https://scholars.unh.edu/honors/774