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  • Nilsson, HansLuleå tekniska universitet,Rymdteknik,Swedish Institute of Space Physics, Box 812, SE-981 28 Kiruna, Sweden,Swedish Inst Space Phys, Box 812, SE-98128 Kiruna, Sweden;Luleå Univ Technol, Dept Comp Sci Elect & Space Engn, SE-98128 Kiruna, Sweden (författare)

Evolution of the ion environment of comet 67P during the Rosetta mission as seen by RPC-ICA

  • Artikel/kapitelEngelska2017

Förlag, utgivningsår, omfång ...

  • 2017-06-21
  • Oxford University Press,2017
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:ltu-101076
  • https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-101076URI
  • https://doi.org/10.1093/mnras/stx1491DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-153853URI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-273857URI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-376699URI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • For correction, see: Hans Nilsson and others, Erratum: Evolution of the ion environment of comet 67P during the Rosetta mission as seen by RPC-ICA, Monthly Notices of the Royal Astronomical Society, Volume 469, Issue Suppl_2, July 2017, Page S804, https://doi.org/10.1093/mnras/stx3069
  • QC 20200818
  • Rosetta has followed comet 67P from low activity at more than 3.6 au heliocentric distance to high activity at perihelion (1.24 au) and then out again. We provide a general overview of the evolution of the dynamic ion environment using data from the RPC-ICA ion spectrometer. We discuss where Rosetta was located within the evolving comet magnetosphere. For the initial observations, the solar wind permeated all of the coma. In 2015 mid-April, the solar wind started to disappear from the observation region, to re-appear again in 2015 December. Low-energy cometary ions were seen at first when Rosetta was about 100 km from the nucleus at 3.6 au, and soon after consistently throughout the mission except during the excursions to farther distances from the comet. The observed flux of low-energy ions was relatively constant due to Rosetta's orbit changing with comet activity. Accelerated cometary ions, moving mainly in the antisunward direction gradually became more common as comet activity increased. These accelerated cometary ions kept being observed also after the solar wind disappeared from the location of Rosetta, with somewhat higher fluxes further away from the nucleus. Around perihelion, when Rosetta was relatively deep within the comet magnetosphere, the fluxes of accelerated cometary ions decreased, as did their maximum energy. The disappearance of more energetic cometary ions at close distance during high activity is suggested to be due to a flow pattern where these ions flow around the obstacle of the denser coma or due to charge exchange losses.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Stenberg Wieser, GabriellaSwedish Institute of Space Physics, Box 812, SE-981 28 Kiruna, Sweden,Swedish Inst Space Phys, Box 812, SE-98128 Kiruna, Sweden (författare)
  • Behar, EtienneLuleå tekniska universitet,Rymdteknik,Swedish Institute of Space Physics, Box 812, SE-981 28 Kiruna, Sweden,Swedish Inst Space Phys, Box 812, SE-98128 Kiruna, Sweden;Luleå Univ Technol, Dept Comp Sci Elect & Space Engn, SE-98128 Kiruna, Sweden(Swepub:ltu)etibeh (författare)
  • Gunell, HerbertUmeå universitet,Institutionen för fysik,Royal Belgian Institute for Space Aeronomy, Avenue Circulaire 3, B-1180 Brussels, Belgium; Department of Physics, Umeå University, SE-901 87 Umeå, Sweden,Royal Belgian Inst Space Aeron, Ave Circulaire 3, B-1180 Brussels, Belgium;Umeå Univ, Dept Phys, SE-90187 Umeå, Sweden(Swepub:umu)hegu0051 (författare)
  • Wieser, MartinSwedish Institute of Space Physics, Box 812, SE-981 28 Kiruna, Sweden,Swedish Inst Space Phys, Box 812, SE-98128 Kiruna, Sweden (författare)
  • Galand, MarinaDepartment of Physics, Imperial College London, Prince Consort Road, London SW7 2AZ, UK,Imperial Coll London, Dept Phys, Prince Consort Rd, London SW7 2AZ, England (författare)
  • Simon Wedlund, CyrilDepartment of Physics, University of Oslo, PO Box 1048 Blindern, N-0316 Oslo, Norway,Univ Oslo, Dept Phys, POB 1048 Blindern, N-0316 Oslo, Norway (författare)
  • Alho, MarkkuDepartment of Electronics and Nanoengineering, School of Electrical Engineering, Aalto University, PO Box 15500, FI-00076 Aalto, Finland,Aalto Univ, Sch Elect Engn, Dept Elect & Nanoengn, POB 15500, FI-00076 Aalto, Finland (författare)
  • Goetz, CharlotteInstitut für Geophysik und extraterrestrische Physik, Technische Universität Braunschweig, Mendelssohnstr 3, D-38106 Braunschweig, Germany,Tech Univ Carolo Wilhelmina Braunschweig, Inst Geophys & Extraterr Phys, Mendelssohnstr 3, D-38106 Braunschweig, Germany (författare)
  • Yamauchi, MasatoshiSwedish Institute of Space Physics, Box 812, SE-981 28 Kiruna, Sweden,Swedish Inst Space Phys, Box 812, SE-98128 Kiruna, Sweden (författare)
  • Henri, PierreLPC2E-CNRS, 3A avenue de la Recherche Scientifique, F-45071 Orléans, Cedex, 2, Orléans, France,CNRS, LPC2E, 3A Ave Rech Sci, F-45071 Orleans 2, France (författare)
  • Odelstad, EliasUppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen(Swepub:uu)eliod143 (författare)
  • Vigren, ErikUppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen(Swepub:uu)erivi300 (författare)
  • Luleå tekniska universitetRymdteknik (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Monthly notices of the Royal Astronomical Society: Oxford University Press469:Suppl_2, s. S252-S2610035-87111365-2966

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