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Solar Orbiter's enc...
Solar Orbiter's encounter with the tail of comet C/2019 Y4 (ATLAS) : Magnetic field draping and cometary pick-up ion waves
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- Matteini, L. (författare)
- Imperial Coll London, Dept Phys, South Kensington Campus, London SW7 2AZ, England.
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- Laker, R. (författare)
- Imperial Coll London, Dept Phys, South Kensington Campus, London SW7 2AZ, England.
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- Horbury, T. (författare)
- Imperial Coll London, Dept Phys, South Kensington Campus, London SW7 2AZ, England.
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- Woodham, L. (författare)
- Imperial Coll London, Dept Phys, South Kensington Campus, London SW7 2AZ, England.
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- Bale, S. D. (författare)
- Imperial Coll London, Dept Phys, South Kensington Campus, London SW7 2AZ, England.;Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.;Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
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- Stawarz, J. E. (författare)
- Imperial Coll London, Dept Phys, South Kensington Campus, London SW7 2AZ, England.
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- Woolley, T. (författare)
- Imperial Coll London, Dept Phys, South Kensington Campus, London SW7 2AZ, England.
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- Steinvall, Konrad (författare)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Rymd- och plasmafysik
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- Jones, G. H. (författare)
- UCL, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England.;UCL Birkbeck, Ctr Planetary Sci, Gower St, London, England.
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- Grant, S. R. (författare)
- UCL, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England.;UCL Birkbeck, Ctr Planetary Sci, Gower St, London, England.
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- Afghan, Q. (författare)
- UCL, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England.;UCL Birkbeck, Ctr Planetary Sci, Gower St, London, England.
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- Galand, M. (författare)
- Imperial Coll London, Dept Phys, South Kensington Campus, London SW7 2AZ, England.
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- O'Brien, H. (författare)
- Imperial Coll London, Dept Phys, South Kensington Campus, London SW7 2AZ, England.
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- Evans, V. (författare)
- Imperial Coll London, Dept Phys, South Kensington Campus, London SW7 2AZ, England.
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- Angelini, V. (författare)
- Univ PSL, LESIA, Observ Paris, CNRS,Sorbonne Univ,Univ Paris Diderot,Sorbonne Pa, 5 Pl Jules Janssen, F-92195 Meudon, France.
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- Maksimovic, M. (författare)
- Univ Paris Saclay, LPP, CNRS, Ecole Polytech,Sorbonne Univ,Observ Paris, Paris, France.
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Chust, T. (författare)
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- Khotyaintsev, Yuri (författare)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Krasnoselskikh, V. (författare)
- CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.;Univ Orleans, Orleans, France.
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- Kretzschmar, M. (författare)
- CNES, 18 Ave Edouard Belin, F-31400 Toulouse, France.
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- Lorfèvre, E. (författare)
- Tech Univ Dresden, Wurzburger Str 35, D-01187 Dresden, Germany.
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- Plettemeier, D. (författare)
- Tech Univ Dresden, Wurzburger Str 35, D-01187 Dresden, Germany.
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- Soucek, J. (författare)
- Czech Acad Sci, Inst Atmospher Phys, Prague, Czech Republic.
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- Steller, M. (författare)
- Austrian Acad Sci, Space Res Inst, Graz, Austria.
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- Stverak, S. (författare)
- Czech Acad Sci, Inst Atmospher Phys, Prague, Czech Republic.;Czech Acad Sci, Astron Inst, Prague, Czech Republic.
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- Travnicek, P. (författare)
- Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.;Czech Acad Sci, Astron Inst, Prague, Czech Republic.
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- Vaivads, Andris (författare)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Department of Space and Plasma Physics, School of Electrical Engineering and Computer, Uppsala, Sweden
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- Vecchio, A. (författare)
- Univ PSL, LESIA, Observ Paris, CNRS,Sorbonne Univ,Univ Paris Diderot,Sorbonne Pa, 5 Pl Jules Janssen, F-92195 Meudon, France.;Radboud Univ Nijmegen, Radboud Radio Lab, Dept Astrophys, Nijmegen, Netherlands.
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- Wimmer-Schweingruber, R. F. (författare)
- Christian Albrechts Univ Kiel, Inst Expt & Angewande Phys, D-24118 Kiel, Germany.
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- Ho, G. C. (författare)
- Johns Hopkins Univ, Appl Phys Lab, Johns Hopkins Rd, Laurel, MD USA.
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- Gómez-Herrero, R. (författare)
- Univ Alcala De Henares, Dept Fis & Matemat, Space Res Grp, Alcala De Henares 28805, Spain.
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- Rodriguez-Pacheco, J. (författare)
- Univ Alcala De Henares, Dept Fis & Matemat, Space Res Grp, Alcala De Henares 28805, Spain.
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- Louarn, P. (författare)
- Univ Toulouse, CNES, Inst Rech Astrophys & Planetol, CNRS, Toulouse, France.
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- Fedorov, A. (författare)
- Univ Toulouse, CNES, Inst Rech Astrophys & Planetol, CNRS, Toulouse, France.
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- Owen, C. J. (författare)
- UCL, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England.
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- Bruno, R. (författare)
- INAF Ist Astrofis & Planetol Spaziali, Via Fosso del Cavaliere 100, I-00133 Rome, Italy.
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- Livi, S. (författare)
- Southwest Res Inst, 6220 Culebra Rd, San Antonio, TX 78238 USA.
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- Zouganelis, I. (författare)
- European Space Agcy, ESAC, Camino Bajo Castillo S-N, Madrid 28692, Spain.
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- Müller, D. (författare)
- European Space Agcy, ESTEC, POB 299, NL-2200 AG Noordwijk, Netherlands.
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Imperial Coll London, Dept Phys, South Kensington Campus, London SW7 2AZ, England Imperial Coll London, Dept Phys, South Kensington Campus, London SW7 2AZ, England.;Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.;Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA. (creator_code:org_t)
- 2021-12-14
- 2021
- Engelska.
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 656
- Relaterad länk:
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https://discovery.uc...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Context. Solar Orbiter is expected to have flown close to the tail of comet C/2019 Y4 (ATLAS) during the spacecraft’s first perihelion in June 2020. Models predict a possible crossing of the comet tails by the spacecraft at a distance from the Sun of approximately 0.5 AU.Aims. This study is aimed at identifying possible signatures of the interaction of the solar wind plasma with material released by comet ATLAS, including the detection of draped magnetic field as well as the presence of cometary pick-up ions and of ion-scale waves excited by associated instabilities. This encounter provides us with the first opportunity of addressing such dynamics in the inner Heliosphere and improving our understanding of the plasma interaction between comets and the solar wind.Methods. We analysed data from all in situ instruments on board Solar Orbiter and compared their independent measurements in order to identify and characterize the nature of structures and waves observed in the plasma when the encounter was predicted.Results. We identified a magnetic field structure observed at the start of 4 June, associated with a full magnetic reversal, a local deceleration of the flow and large plasma density, and enhanced dust and energetic ions events. The cross-comparison of all these observations support a possible cometary origin for this structure and suggests the presence of magnetic field draping around some low-field and high-density object. Inside and around this large scale structure, several ion-scale wave-forms are detected that are consistent with small-scale waves and structures generated by cometary pick-up ion instabilities.Conclusions. Solar Orbiter measurements are consistent with the crossing through a magnetic and plasma structure of cometary origin embedded in the ambient solar wind. We suggest that this corresponds to the magnetotail of one of the fragments of comet ATLAS or to a portion of the tail that was previously disconnected and advected past the spacecraft by the solar wind.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Nyckelord
- solar wind
- comets: individual: C/2019 Y4 ATLAS
- plasmas
- waves
- instabilities
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- Av författaren/redakt...
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Matteini, L.
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Laker, R.
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Horbury, T.
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Woodham, L.
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Bale, S. D.
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Stawarz, J. E.
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visa fler...
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Woolley, T.
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Steinvall, Konra ...
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Jones, G. H.
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Grant, S. R.
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Afghan, Q.
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Galand, M.
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O'Brien, H.
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Evans, V.
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Angelini, V.
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Maksimovic, M.
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Chust, T.
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Khotyaintsev, Yu ...
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Krasnoselskikh, ...
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Kretzschmar, M.
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Lorfèvre, E.
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Plettemeier, D.
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Soucek, J.
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Steller, M.
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Stverak, S.
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Travnicek, P.
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Vaivads, Andris
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Vecchio, A.
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Wimmer-Schweingr ...
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Ho, G. C.
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Gómez-Herrero, R ...
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Rodriguez-Pachec ...
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Louarn, P.
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Fedorov, A.
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Owen, C. J.
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Bruno, R.
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Livi, S.
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Zouganelis, I.
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Müller, D.
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