Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Instrumental and environmental effects on RPC-ICA measurements of the cometary ion dynamics at comet 67P/CG
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology. Swedish Institute of Space Physics. (Solar System Physics and Space Technology)
2017 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Observations provided from RPC-ICA in combination with the data from RPC-MAG and ROSINA-COPS show that many aspects of the time variability of the detected ions is correlated with the magnetic field or -- to a smaller extent -- with neutral atmosphere density. We also show that not all changes in the cometary ion data reflect the nature of the plasma dynamics, but are a consequence of the instrumental limitations. The main outcome of the article in Appendix 1 is that the cometary ions can be divided into two populations with distinct characteristics. One population we termed the convecting population, is accelerated to higher energies through the interaction with the solar wind. The other population we termed the expanding population is moving radially away from the nucleus in the terminator plane. Both populations exhibit a significant anti-sunward component.In addition we present in this thesis a case with observations day-side of the terminator plane. There we show how the expanding population has a sunward component, consistent with initial radial expansion of the ions from the nucleus which gradually turn into an anti-sunward flow which is then observed in the terminator plane.

Place, publisher, year, edition, pages
2017. , 49 p.
Series
Thesis: Master of Science in Mechanichal Engineering
Keyword [en]
Comets: general, Comets: individual: 67P, plasmas, methods: observational, space vehicles: instruments
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ltu:diva-65531OAI: oai:DiVA.org:ltu-65531DiVA: diva2:1139588
Subject / course
Student thesis, at least 30 credits
Educational program
Space Engineering, master's level (120 credits)
Presentation
2017-09-06, Room A, LTU Kiruna, Rymdkampus 1, Kiruna, 14:00 (English)
Supervisors
Examiners
Available from: 2017-09-08 Created: 2017-09-08 Last updated: 2017-09-08Bibliographically approved

Open Access in DiVA

fulltext(9085 kB)24 downloads
File information
File name FULLTEXT01.pdfFile size 9085 kBChecksum SHA-512
a695134ad68b8521de43c87530c083a9b7fd57ad382c2f854c50bc8f9fa32c13cb2701419730f6dc60ac965a0da0cb116e1a3bb332936df5de32fadec9a7cc38
Type fulltextMimetype application/pdf

By organisation
Space Technology
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 24 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 101 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf