SwePub
Sök i LIBRIS databas

  Utökad sökning

onr:"swepub:oai:DiVA.org:kth-307353"
 

Sökning: onr:"swepub:oai:DiVA.org:kth-307353" > Density fluctuation...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00007885naa a2200721 4500
001oai:DiVA.org:kth-307353
003SwePub
008220124s2021 | |||||||||||000 ||eng|
009oai:DiVA.org:uu-464443
024a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3073532 URI
024a https://doi.org/10.1051/0004-6361/2021409362 DOI
024a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4644432 URI
040 a (SwePub)kthd (SwePub)uu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Khotyaintsev, Yu, Vu Swedish Inst Space Phys IRF, S-75121 Uppsala, Sweden.4 aut
2451 0a Density fluctuations associated with turbulence and waves First observations by Solar Orbiter
264 c 2021-12-14
264 1b EDP Sciences,c 2021
338 a print2 rdacarrier
500 a QC 20220124
520 a Aims. The aim of this work is to demonstrate that the probe-to-spacecraft potential measured by RPW on Solar Orbiter can be used to derive the plasma (electron) density measurement, which exhibits both a high temporal resolution and a high level of accuracy. To investigate the physical nature of the solar wind turbulence and waves, we analyze the density and magnetic field fluctuations around the proton cyclotron frequency observed by Solar Orbiter during the first perihelion encounter (similar to 0.5AU away from the Sun). Methods. We used the plasma density based on measurements of the probe-to-spacecraft potential in combination with magnetic field measurements by MAG to study the fields and density fluctuations in the solar wind. In particular, we used the polarization of the wave magnetic field, the phase between the compressible magnetic field and density fluctuations, and the compressibility ratio (the ratio of the normalized density fluctuations to the normalized compressible fluctuations of B) to characterize the observed waves and turbulence. Results. We find that the density fluctuations are 180 degrees out of phase (anticorrelated) with the compressible component of magnetic fluctuations for intervals of turbulence, whereas they are in phase for the circular-polarized waves. We analyze, in detail, two specific events with a simultaneous presence of left- and right-handed waves at di fferent frequencies. We compare the observed wave properties to a prediction of the three-fluid (electrons, protons, and alphas) model. We find a limit on the observed wavenumbers, 10(-6) < k < 7 > 10(-6) m(-1), which corresponds to a wavelength of 7 x 10(6) > lambda > 10(6) m. We conclude that it is most likely that both the leftand right-handed waves correspond to the low-wavenumber part (close to the cut-o ff at Omega(cHe++)) of the proton-band electromagnetic ion cyclotron (left-handed wave in the plasma frame confined to the frequency range Omega(cHe++) < omega < Omega(cp)) waves propagating in the outwards and inwards directions, respectively. The fact that both wave polarizations are observed at the same time and the identified wave mode has a low group velocity suggests that the double-banded events occur in the source regions of the waves.
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
650 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
653 a turbulence
653 a waves
653 a solar wind
700a Graham, Daniel B.u Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen4 aut0 (Swepub:uu)dangr618
700a 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
700a Steinvall, Konradu Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Rymd- och plasmafysik4 aut0 (Swepub:uu)konst774
700a Edberg, Niklas J. T.u Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen4 aut0 (Swepub:uu)niked861
700a Eriksson, Anders I.u Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen4 aut0 (Swepub:uu)andeerik
700a Johansson, Erik P. G.u Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen4 aut0 (Swepub:uu)erijo810
700a Sorriso-Valvo, Lucau Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen4 aut0 (Swepub:uu)lucso160
700a Maksimovic, M.u Swedish Inst Space Phys IRF, S-75121 Uppsala, Sweden.,Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.;CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.,Austrian Acad Sci, Space Res Inst, Graz, Austria.4 aut
700a Bale, S. D.u Univ PSL, LESIA, Observ Paris, CNRS,Sorbonne Univ,Univ Paris Diderot,Sorbonne Pa, 5 Pl Jules Janssen, F-92195 Meudon, France.,Czech Acad Sci, Astron Inst, Prague, Czech Republic.4 aut
700a Chust, T.u Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.;Univ Calif Berkeley, Phys Dept, Berkeley, CA 94720 USA.4 aut
700a Krasnoselskikh, Vu UniversitC Paris Saclay, Observ Paris, Sorbonne UniversitC, LPP,CNRS,Ecole Polytech, Palaiseau Paris, France.4 aut
700a Kretzschmar, M.u Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.;CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.4 aut
700a Lorfevre, E.u CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.;Univ Orleans, Orleans, France.;CNES, 18 Ave Edouard Belin, F-31400 Toulouse, France.4 aut
700a Plettemeier, D.u Tech Univ Dresden, Helmholtz Str 10, D-01187 Dresden, Germany.4 aut
700a Soucek, J.u Czech Acad Sci, Inst Atmospher Phys, Prague, Czech Republic.4 aut
700a Steller, M.u Austrian Acad Sci, Space Res Inst, Graz, Austria.4 aut
700a Stverak, S.u Czech Acad Sci, Astron Inst, Prague, Czech Republic.,Imperial Coll London, South Kensington Campus, London SW7 2AZ, England.4 aut
700a Travnicek, P.u Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.;Czech Acad Sci, Inst Atmospher Phys, Prague, Czech Republic.4 aut
700a Vecchio, A.u Univ PSL, LESIA, Observ Paris, CNRS,Sorbonne Univ,Univ Paris Diderot,Sorbonne Pa, 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
700a Horbury, T. S.u Imperial Coll London, South Kensington Campus, London SW7 2AZ, England.4 aut
700a O'Brien, H.u Imperial Coll London, South Kensington Campus, London SW7 2AZ, England.4 aut
700a Evans, Vu Imperial Coll London, South Kensington Campus, London SW7 2AZ, England.4 aut
700a Angelini, Vu Imperial Coll London, South Kensington Campus, London SW7 2AZ, England.4 aut
700a Khotyaintsev, Yuri V.u Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen4 aut0 (Swepub:uu)ykh28990
710a Swedish Inst Space Phys IRF, S-75121 Uppsala, Sweden.b Institutet för rymdfysik, Uppsalaavdelningen4 org
773t Astronomy and Astrophysicsd : EDP Sciencesg 656q 656x 0004-6361x 1432-0746
856u https://doi.org/10.1051/0004-6361/202140936y Fulltext
856u https://www.aanda.org/articles/aa/pdf/2021/12/aa40936-21.pdf
856u https://uu.diva-portal.org/smash/get/diva2:1629064/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-307353
8564 8u https://doi.org/10.1051/0004-6361/202140936
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-464443

Hitta via bibliotek

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy