Plasma Structures at Enceladus’ South Polar Region
Independent thesis Advanced level (degree of Master (Two Years)), 10 credits / 15 HE creditsStudent thesis
The outflow of Saturns moon Enceladus is studied by analysing the electron density variation.Here the density variation of the 20 Hz data from the Cassini Radio Plasma Wave Science(RPWS) Langmuir Probe (LP) are presented. Of a total of 20 flybys 11 have been analysed onthe fine-structure of the electron densities.There is fine-structure to be found in the plume, but obvious association to the tiger stripes andsources of jets is not seen. Tiger stripes are a set of cracks in the ice sheet visible near thesouth pole of Enceladus. An increase in density near the tiger stripe region is also observed aswell as more fine structure close to the surface meaning that this might result from boundaryconditions like the cracks.The shape of the plume, due to plasma processes, its fine structure and jets needs to betaken into account as well as charging mechanisms of the dust, altitude dependencies and theelectromagnetic field.
Place, publisher, year, edition, pages
2013. , 66 p.
Enceladus, Plume, Structure
Astronomy, Astrophysics and Cosmology
IdentifiersURN: urn:nbn:se:uu:diva-196260OAI: oai:DiVA.org:uu-196260DiVA: diva2:609601
Master Programme in Physics
2013-02-14, 10:00 (English)
UppsokPhysics, Chemistry, Mathematics
Eriksson, Anders, PhDWahlund, Jan-Erik, Associate Professor