umu.sePublikationer
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
Investigating short-time-scale variations in cometary ions around comet 67P
Visa övriga samt affilieringar
2017 (Engelska)Ingår i: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 469, s. S522-S534Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The highly varying plasma environment around comet 67P/Churyumov-Gerasimenko inspired an upgrade of the ion mass spectrometer (Rosetta Plasma Consortium Ion Composition Analyzer) with new operation modes, to enable high time resolution measurements of cometary ions. Two modes were implemented, one having a 4 s time resolution in the energy range 0.3-82 eV/q and the other featuring a 1 s time resolution in the energy range 13-50 eV/q. Comparing measurements made with the two modes, it was concluded that 4 s time resolution is enough to capture most of the fast changes of the cometary ion environment. The 1462 h of observations done with the 4 s mode were divided into hour-long sequences. It is possible to sort 84 per cent of these sequences into one of five categories, depending on their appearance in an energy-time spectrogram. The ion environment is generally highly dynamic, and variations in ion fluxes and energies are seen on time-scales of 10 s to several minutes.

Ort, förlag, år, upplaga, sidor
Oxford University Press, 2017. Vol. 469, s. S522-S534
Nyckelord [en]
plasmas, instrumentation: detectors, methods: data analysis, methods: statistical, space vehicles: instruments, comets: individual: 67P
Nationell ämneskategori
Fusion, plasma och rymdfysik Astronomi, astrofysik och kosmologi
Identifikatorer
URN: urn:nbn:se:umu:diva-153854DOI: 10.1093/mnras/stx2133ISI: 000443940500049OAI: oai:DiVA.org:umu-153854DiVA, id: diva2:1268359
Konferens
International Conference on Cometary Science - Comets - A New Vision after Rosetta and Philae, NOV 14-18, 2016, Toulouse, FRANCE
Forskningsfinansiär
Rymdstyrelsen, 96/15Rymdstyrelsen, 101/15Rymdstyrelsen, 95/15Tillgänglig från: 2018-12-05 Skapad: 2018-12-05 Senast uppdaterad: 2018-12-05Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltext

Personposter BETA

Gunell, Herbert

Sök vidare i DiVA

Av författaren/redaktören
Odelstad, EliasNilsson, HansEriksson, Anders I.Gunell, Herbert
Av organisationen
Institutionen för fysik
I samma tidskrift
Monthly notices of the Royal Astronomical Society
Fusion, plasma och rymdfysikAstronomi, astrofysik och kosmologi

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 29 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