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  • Dimmock, A. P.Swedish Inst Space Phys IRF, Uppsala, Sweden.,Tech Univ Dresden, Helmholtz Str 10, D-01187 Dresden, Germany. (författare)

Analysis of multiscale structures at the quasi-perpendicular Venus bow shock Results from Solar Orbiter's first Venus flyby

  • Artikel/kapitelEngelska2022

Förlag, utgivningsår, omfång ...

  • 2022-04-13
  • EDP Sciences,2022
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:kth-312237
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-312237URI
  • https://doi.org/10.1051/0004-6361/202140954DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-474447URI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

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

Anmärkningar

  • QC 20220516
  • Context. Solar Orbiter is a European Space Agency mission with a suite of in situ and remote sensing instruments to investigate the physical processes across the inner heliosphere. During the mission, the spacecraft is expected to perform multiple Venus gravity assist maneuvers while providing measurements of the Venusian plasma environment. The first of these occurred on 27 December 2020, in which the spacecraft measured the regions such as the distant and near Venus magnetotail, magnetosheath, and bow shock. Aims. This study aims to investigate the outbound Venus bow shock crossing measured by Solar Orbiter during the first flyby. We study the complex features of the bow shock traversal in which multiple large amplitude magnetic field and density structures were observed as well as higher frequency waves. Our aim is to understand the physical mechanisms responsible for these high amplitude structures, characterize the higher frequency waves, determine the source of the waves, and put these results into context with terrestrial bow shock observations. Methods. High cadence magnetic field, electric field, and electron density measurements were employed to characterize the properties of the large amplitude structures and identify the relevant physical process. Minimum variance analysis, theoretical shock descriptions, coherency analysis, and singular value decomposition were used to study the properties of the higher frequency waves to compare and identify the wave mode. Results. The non-planar features of the bow shock are consistent with shock rippling and/or large amplitude whistler waves. Higher frequency waves are identified as whistler-mode waves, but their properties across the shock imply they may be generated by electron beams and temperature anisotropies. Conclusions. The Venus bow shock at a moderately high Mach number (similar to 5) in the quasi-perpendicular regime exhibits complex features similar to the Earth's bow shock at comparable Mach numbers. The study highlights the need to be able to distinguish between large amplitude waves and spatial structures such as shock rippling. The simultaneous high frequency observations also demonstrate the complex nature of energy dissipation at the shock and the important question of understanding cross-scale coupling in these complex regions. These observations will be important to interpreting future planetary missions and additional gravity assist maneuvers.

Ämnesord och genrebeteckningar

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

  • Khotyaintsev, Yu. V.Swedish Inst Space Phys IRF, Uppsala, Sweden. (författare)
  • Lalti, AhmadUppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Institutionen för fysik och astronomi,Swedish Inst Space Phys IRF, Uppsala, Sweden.(Swepub:uu)ahmla528 (författare)
  • Yordanova, E.Swedish Inst Space Phys IRF, Uppsala, Sweden. (författare)
  • Edberg, N. J. T.Swedish Inst Space Phys IRF, Uppsala, Sweden. (författare)
  • Steinvall, KonradUppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Rymd- och plasmafysik,Swedish Inst Space Phys IRF, Uppsala, Sweden.(Swepub:uu)konst774 (författare)
  • Graham, D. B.Swedish Inst Space Phys IRF, Uppsala, Sweden. (författare)
  • Hadid, L. Z.Univ Paris Saclay, Sorbonne Univ, Observ Paris, LPP,CNRS,Ecole Polytech, Paris, France. (författare)
  • Allen, R. C.Johns Hopkins Appl Phys Lab, Laurel, MD 20723 USA. (författare)
  • Vaivads, AndrisKTH,Rymd- och plasmafysik,KTH Royal Inst Technol, Sch Elect Engn & Comp Sci, Div Space & Plasma Phys, S-11428 Stockholm, Sweden.(Swepub:kth)u167dmzs (författare)
  • Maksimovic, M.Univ Paris Diderot, Sorbonne Univ, Sorbonne Paris Cite, LESIA,Observ Paris,Univ PSL,CNRS, 5 Pl Jules Janssen, F-92195 Meudon, France.,CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.;Univ Orleans, Orleans, France.,Austrian Acad Sci, Space Res Inst, Graz, Austria. (författare)
  • Bale, S. D.Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.;Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.,Czech Acad Sci, Inst Atmospher Phys, Prague, Czech Republic.;Czech Acad Sci, Astron Inst, Prague, Czech Republic. (författare)
  • Chust, T.Univ Paris Saclay, Sorbonne Univ, Observ Paris, LPP,CNRS,Ecole Polytech, Paris, France. (författare)
  • Krasnoselskikh, V.Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.;CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France. (författare)
  • Kretzschmar, M.CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.;Univ Orleans, Orleans, France. (författare)
  • Lorfevre, E.CNES, 18 Ave Edouard Belin, F-31400 Toulouse, France. (författare)
  • Plettemeier, D.Tech Univ Dresden, Helmholtz Str 10, D-01187 Dresden, Germany. (författare)
  • Soucek, J.Czech Acad Sci, Inst Atmospher Phys, Prague, Czech Republic. (författare)
  • Steller, M.Austrian Acad Sci, Space Res Inst, Graz, Austria. (författare)
  • Stverak, S.Czech Acad Sci, Inst Atmospher Phys, Prague, Czech Republic.;Czech Acad Sci, Astron Inst, Prague, Czech Republic.,Imperial Coll London, South Kensington Campus, London SW7 2AZ, England. (författare)
  • Travnicek, P.Czech Acad Sci, Astron Inst, Prague, Czech Republic. (författare)
  • Vecchio, A.Univ Paris Diderot, Sorbonne Univ, Sorbonne Paris Cite, LESIA,Observ Paris,Univ PSL,CNRS, 5 Pl Jules Janssen, F-92195 Meudon, France.;Radboud Univ Nijmegen, Dept Astrophys, Radboud Radio Lab, Nijmegen, Netherlands.,Imperial Coll London, South Kensington Campus, London SW7 2AZ, England. (författare)
  • Horbury, T. S.Imperial Coll London, South Kensington Campus, London SW7 2AZ, England. (författare)
  • O'Brien, H.Imperial Coll London, South Kensington Campus, London SW7 2AZ, England. (författare)
  • Evans, V.Imperial Coll London, South Kensington Campus, London SW7 2AZ, England. (författare)
  • Angelini, V.Imperial Coll London, South Kensington Campus, London SW7 2AZ, England. (författare)
  • Swedish Inst Space Phys IRF, Uppsala, Sweden.Tech Univ Dresden, Helmholtz Str 10, D-01187 Dresden, Germany. (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Astronomy and Astrophysics: EDP Sciences6600004-63611432-0746

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