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Sökning: onr:"swepub:oai:DiVA.org:kth-307351" > Kinetic electrostat...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00007016naa a2200673 4500
001oai:DiVA.org:kth-307351
003SwePub
008220124s2021 | |||||||||||000 ||eng|
009oai:DiVA.org:uu-464263
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3073512 URI
0247 a https://doi.org/10.1051/0004-6361/2021409432 DOI
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4642632 URI
040 a (SwePub)kthd (SwePub)uu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Graham, Daniel B.u Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen4 aut0 (Swepub:uu)dangr618
2451 0a Kinetic electrostatic waves and their association with current structures in the solar wind
264 c 2021-12-14
264 1b EDP Sciences,c 2021
338 a print2 rdacarrier
500 a QC 20220124
520 a Context. A variety of kinetic electrostatic and electromagnetic waves develop in the solar wind and the relationship between these waves and larger scale structures, such as current sheets and ongoing turbulence, remain a topic of investigation. Similarly, the instabilities producing ion-acoustic waves in the solar wind are still an open question. Aims. The goals of this paper are to investigate electrostatic Langmuir and ion-acoustic waves in the solar wind at 0.5 AU and determine whether current sheets and associated streaming instabilities can produce the observed waves. The relationship between these waves and currents observed in the solar wind is investigated statistically. Methods. Solar Orbiter's Radio and Plasma Waves instrument suite provides high-resolution snapshots of the fluctuating electric field. The Low Frequency Receiver resolves the waveforms of ion-acoustic waves and the Time Domain Sampler resolves the waveforms of both ion-acoustic and Langmuir waves. Using these waveform data, we determine when these waves are observed in relation to current structures in the solar wind, estimated from the background magnetic field. Results. Langmuir and ion-acoustic waves are frequently observed in the solar wind. Ion-acoustic waves are observed about 1% of the time at 0.5 AU. The waves are more likely to be observed in regions of enhanced currents. However, the waves typically do not occur at current structures themselves. The observed currents in the solar wind are too small to drive instability by the relative drift between single ion and electron populations. When multi-component ion or electron distributions are present, the observed currents may be sufficient for instabilities to occur. Ion beams are the most plausible source of ion-acoustic waves in the solar wind. The spacecraft potential is confirmed to be a reliable probe of the background electron density when comparing the peak frequencies of Langmuir waves with the plasma frequency calculated from the spacecraft potential.
650 7a NATURVETENSKAPx Fysikx Fusion, plasma och rymdfysik0 (SwePub)103032 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Fusion, Plasma and Space Physics0 (SwePub)103032 hsv//eng
653 a solar wind
653 a waves
653 a turbulence
7001 a Khotyaintsev, Yu, Vu Swedish Inst Space Phys IRF, S-75121 Uppsala, Sweden.4 aut
7001 a Vaivads, Andrisu KTH,Rymd- och plasmafysik,KTH Royal Inst Technol, Sch Elect Engn & Comp Sci, Div Space & Plasma Phys, S-11428 Stockholm, Sweden.4 aut0 (Swepub:kth)u167dmzs
7001 a Edberg, Niklas J. T.u Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen4 aut0 (Swepub:uu)niked861
7001 a Eriksson, Andersu Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen4 aut0 (Swepub:uu)andeerik
7001 a Johansson, Erik P. G.u Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen4 aut0 (Swepub:uu)erijo810
7001 a Sorriso-Valvo, Lucau Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen4 aut0 (Swepub:uu)lucso160
7001 a Maksimovic, M.u Univ Paris Diderot, Sorbonne Univ, LESIA, Sorbonne Paris Cite,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.4 aut
7001 a Soucek, J.u Czech Acad Sci, Inst Atmospher Phys, Prague, Czech Republic.4 aut
7001 a Pisa, D.u Czech Acad Sci, Inst Atmospher Phys, Prague, Czech Republic.4 aut
7001 a Bale, S. D.u Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.;Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.,Czech Acad Sci, Astron Inst, Prague, Czech Republic.4 aut
7001 a Chust, T.u Univ Paris Saclay, LPP, CNRS, Ecole Polytech,Sorbonne Univ,Observ Paris, Paris, France.4 aut
7001 a Kretzschmar, M.u CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.;Univ Orleans, Orleans, France.4 aut
7001 a Krasnoselskikh, Vu Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.;CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.4 aut
7001 a Lorfevre, E.u CNES, 18 Ave Edouard Belin, F-31400 Toulouse, France.4 aut
7001 a Plettemeier, D.u Tech Univ Dresden, Helmholtz Str 10, D-01187 Dresden, Germany.4 aut
7001 a Steller, M.u Austrian Acad Sci, Space Res Inst, Graz, Austria.4 aut
7001 a Stverak, S.u Czech Acad Sci, Astron Inst, Prague, Czech Republic.,Imperial Coll London, South Kensington Campus, London SW7 2AZ, England.4 aut
7001 a Travnicek, P.u Czech Acad Sci, Inst Atmospher Phys, Prague, Czech Republic.;Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.4 aut
7001 a Vecchio, A.u Univ Paris Diderot, Sorbonne Univ, LESIA, Sorbonne Paris Cite,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.4 aut
7001 a Horbury, T. S.u Imperial Coll London, South Kensington Campus, London SW7 2AZ, England.4 aut
7001 a O'Brien, H.u Imperial Coll London, South Kensington Campus, London SW7 2AZ, England.4 aut
7001 a Evans, Vu Imperial Coll London, South Kensington Campus, London SW7 2AZ, England.4 aut
7001 a Angelini, Vu Imperial Coll London, South Kensington Campus, London SW7 2AZ, England.4 aut
7001 a Khotyaintsev, Yuri V.u Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen4 aut0 (Swepub:uu)ykh28990
7102 a Uppsala universitetb Institutet för rymdfysik, Uppsalaavdelningen4 org
7730 t Astronomy and Astrophysicsd : EDP Sciencesg 656q 656x 0004-6361x 1432-0746
8564 u http://arxiv.org/pdf/2104.01705
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-307351
8564 8u https://doi.org/10.1051/0004-6361/202140943
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-464263

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