Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Instrumental and environmental effects on RPC-ICA measurements of the cometary ion dynamics at comet 67P/CG
Luleå tekniska universitet, Institutionen för system- och rymdteknik, Rymdteknik. Swedish Institute of Space Physics. (Solar System Physics and Space Technology)
2017 (Engelska)Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
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.

Ort, förlag, år, upplaga, sidor
2017. , 49 s.
Serie
Thesis: Master of Science in Mechanichal Engineering
Nyckelord [en]
Comets: general, Comets: individual: 67P, plasmas, methods: observational, space vehicles: instruments
Nationell ämneskategori
Naturvetenskap
Identifikatorer
URN: urn:nbn:se:ltu:diva-65531OAI: oai:DiVA.org:ltu-65531DiVA: diva2:1139588
Ämne / kurs
Examensarbete, minst 30 hp
Utbildningsprogram
Rymdteknik, master
Presentation
2017-09-06, Room A, LTU Kiruna, Rymdkampus 1, Kiruna, 14:00 (Engelska)
Handledare
Examinatorer
Tillgänglig från: 2017-09-08 Skapad: 2017-09-08 Senast uppdaterad: 2017-09-08Bibliografiskt granskad

Open Access i DiVA

fulltext(9085 kB)24 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 9085 kBChecksumma SHA-512
a695134ad68b8521de43c87530c083a9b7fd57ad382c2f854c50bc8f9fa32c13cb2701419730f6dc60ac965a0da0cb116e1a3bb332936df5de32fadec9a7cc38
Typ fulltextMimetyp application/pdf

Av organisationen
Rymdteknik
Naturvetenskap

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 24 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

Totalt: 101 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf