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Whistler waves obse...
Whistler waves observed by Solar Orbiter/RPW between 0.5 AU and 1 AU
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- Kretzschmar, M. (författare)
- Univ Orleans, UMR7328 CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.
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- Chust, T. (författare)
- Univ Paris Saclay, Observ Paris, Sorbonne Univ, Ecole Polytech,LPP,CNRS, Paris, France.
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- Krasnoselskikh, V (författare)
- Univ Orleans, UMR7328 CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.;Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
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- Graham, Daniel B. (författare)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Colomban, L. (författare)
- Univ Orleans, UMR7328 CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.
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- Maksimovic, M. (författare)
- Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Observ Paris,LESIA, Meudon, France.,Univ Orleans, UMR7328 CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.,Austrian Acad Sci, Space Res Inst, Graz, Austria.
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- Khotyaintsev, Yuri V. (författare)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Soucek, J. (författare)
- Czech Acad Sci, Inst Atmospher Phys, Prague, Czech Republic.
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- Steinvall, Konrad (författare)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Santolik, O. (författare)
- Czech Acad Sci, Inst Atmospher Phys, Prague, Czech Republic.
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- Jannet, G. (författare)
- Univ Orleans, UMR7328 CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.
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- Brochot, J-Y (författare)
- Univ Orleans, UMR7328 CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.
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- Le Contel, O. (författare)
- Univ Paris Saclay, Observ Paris, Sorbonne Univ, Ecole Polytech,LPP,CNRS, Paris, France.
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- Vecchio, A. (författare)
- Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Observ Paris,LESIA, Meudon, France.;Radboud Univ Nijmegen, Dept Astrophys, Radboud Radio Lab, Nijmegen, Netherlands.,Imperial Coll, Dept Phys, London SW7 2AZ, England.
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- Bonnin, X. (författare)
- Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Observ Paris,LESIA, Meudon, France.
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- Bale, S. D. (författare)
- Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.;Univ Calif Berkeley, Phys Dept, Berkeley, CA 94720 USA.;Stellar Sci, Berkeley, CA USA.,Czech Acad Sci, Astron Inst, Prague, Czech Republic.
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- Froment, C. (författare)
- Univ Orleans, UMR7328 CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.
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- Larosa, A. (författare)
- Univ Orleans, UMR7328 CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.
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- Bergerard-Timofeeva, M. (författare)
- Univ Orleans, UMR7328 CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.
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- Fergeau, P. (författare)
- Univ Orleans, UMR7328 CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France.
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- Lorfevre, E. (författare)
- CNES, 18 Ave Edouard Belin, F-31400 Toulouse, France.
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- Plettemeier, D. (författare)
- Tech Univ Dresden, Wurzburger Str 35, D-01187 Dresden, Germany.
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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, Astron Inst, Prague, Czech Republic.,Imperial Coll, Dept Phys, London SW7 2AZ, England.
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- Travnicek, P. (författare)
- Czech Acad Sci, Astron Inst, Prague, Czech Republic.;Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
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- Vaivads, Andris (författare)
- KTH,Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Royal Inst Technol, Sch Elect Engn & Comp Sci, Dept Space & Plasma Phys, Stockholm, Sweden.,Rymd- och plasmafysik,Swedish Inst Space Phys IRF, Uppsala, Sweden
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- Horbury, T. S. (författare)
- Imperial Coll, Dept Phys, London SW7 2AZ, England.
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- O'Brien, H. (författare)
- Imperial Coll, Dept Phys, London SW7 2AZ, England.
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- Evans, V (författare)
- Imperial Coll, Dept Phys, London SW7 2AZ, England.
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- Angelini, V (författare)
- Imperial Coll, Dept Phys, London SW7 2AZ, England.
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- Owen, C. J. (författare)
- Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England.
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- Louarn, P. (författare)
- Inst Rech Astrophys & Planetol, 9 Ave Colonel ROCHE,BP 4346, F-31028 Toulouse 4, France.
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Univ Orleans, UMR7328 CNRS, LPC2E, 3A Ave Rech Sci, Orleans, France Univ Paris Saclay, Observ Paris, Sorbonne Univ, Ecole Polytech,LPP,CNRS, Paris, France. (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://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://www.aanda.or...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Context. Solar wind evolution differs from a simple radial expansion, while wave-particle interactions are assumed to be the major cause for the observed dynamics of the electron distribution function. In particular, whistler waves are thought to inhibit the electron heat flux and ensure the diffusion of the field-aligned energetic electrons (Strahl electrons) to replenish the halo population.Aims. The goal of our study is to detect and characterize the electromagnetic waves that have the capacity to modify the electron distribution functions, with a special focus on whistler waves.Methods. We carried out a detailed analysis of the electric and magnetic field fluctuations observed by the Solar Orbiter spacecraft during its first orbit around the Sun, between 0.5 and 1 AU. Using data from the Search Coil Magnetometer and electric antenna, both part of the Radio and Plasma Waves (RPW) instrumental suite, we detected the electromagnetic waves with frequencies above 3 Hz and determined the statistical distribution of their amplitudes, frequencies, polarization, and k-vector as a function of distance. Here, we also discuss the relevant instrumental issues regarding the phase between the electric and magnetic measurements as well as the effective length of the electric antenna.Results. An overwhelming majority of the observed waves are right-handed circularly polarized in the solar wind frame and identified as outwardly propagating quasi-parallel whistler waves. Their occurrence rate increases by a least a factor of 2 from 1 AU to 0.5 AU. These results are consistent with the regulation of the heat flux by the whistler heat flux instability. Near 0.5 AU, whistler waves are found to be more field-aligned and to have a smaller normalized frequency (f/f(ce)), larger amplitude, and greater bandwidth than at 1 AU.
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
- waves
- methods
- data analysis
- solar wind
- Sun
- heliosphere
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Kretzschmar, M.
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Chust, T.
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Krasnoselskikh, ...
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Graham, Daniel B ...
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Colomban, L.
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Maksimovic, M.
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visa fler...
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Khotyaintsev, Yu ...
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Soucek, J.
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Steinvall, Konra ...
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Santolik, O.
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Jannet, G.
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Brochot, J-Y
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Le Contel, O.
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Vecchio, A.
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Bonnin, X.
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Bale, S. D.
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Froment, C.
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Larosa, A.
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Bergerard-Timofe ...
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Fergeau, P.
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Lorfevre, E.
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Plettemeier, D.
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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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Horbury, T. S.
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O'Brien, H.
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Evans, V
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Angelini, V
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Owen, C. J.
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Louarn, P.
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visa färre...
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- NATURVETENSKAP
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NATURVETENSKAP
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och Astronomi astrof ...
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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och Fusion plasma oc ...
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Astronomy and As ...
- Av lärosätet
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Uppsala universitet
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Kungliga Tekniska Högskolan