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Does Turbulence along the Coronal Current Sheet Drive Ion Cyclotron Waves?

Telloni, Daniele (författare)
Natl Inst Astrophys, Astrophys Observ Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy.
Zank, Gary P. P. (författare)
Univ Alabama, Ctr Space Plasma & Aeron Res, Huntsville, AL 35805 USA.;Univ Alabama, Dept Space Sci, Huntsville, AL 35805 USA.
Adhikari, Laxman (författare)
Univ Alabama, Ctr Space Plasma & Aeron Res, Huntsville, AL 35805 USA.
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Zhao, Lingling (författare)
Univ Alabama, Ctr Space Plasma & Aeron Res, Huntsville, AL 35805 USA.
Susino, Roberto (författare)
Natl Inst Astrophys, Astrophys Observ Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy.
Antonucci, Ester (författare)
Natl Inst Astrophys, Astrophys Observ Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy.
Fineschi, Silvano (författare)
Natl Inst Astrophys, Astrophys Observ Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy.
Stangalini, Marco (författare)
Italian Space Agcy, Via Politecn snc, I-00133 Rome, Italy.
Grimani, Catia (författare)
Univ Urbino Carlo Bo, Dept Pure & Appl Sci, Via St Chiara 27, I-61029 Urbino, Italy.;Natl Inst Nucl Phys, Sect Florence, Via Bruno Rossi 1, I-50019 Sesto Fiorentino, Italy.
Sorriso-Valvo, Luca (författare)
Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Inst Sci & Technol Plasmas, Natl Res Council, Via Amendola 122-D, I-70126 Bari, Italy
Verscharen, Daniel (författare)
Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, England.
Marino, Raffaele (författare)
Univ Lyon, Univ Claude Bernard Lyon 1, Ctr Natl Rech Sci, Lab Mecan Fluides & Acoust,Inst Natl Sci Appl Lyon, F-69134 Ecully, France.
Giordano, Silvio (författare)
Natl Inst Astrophys, Astrophys Observ Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy.
D'Amicis, Raffaella (författare)
Natl Inst Astrophys, Inst Space Astrophys & Planetol, Via Fosso del Cavaliere 100, I-00133 Rome, Italy.
Perrone, Denise (författare)
Italian Space Agcy, Via Politecn snc, I-00133 Rome, Italy.
Carbone, Francesco (författare)
Univ Calabria, Inst Atmospher Pollut Res, Natl Res Council, I-87036 Arcavacata Di Rende, Italy.
Liberatore, Alessandro (författare)
CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
Bruno, Roberto (författare)
Natl Inst Astrophys, Inst Space Astrophys & Planetol, Via Fosso del Cavaliere 100, I-00133 Rome, Italy.
Zimbardo, Gaetano (författare)
Univ Calabria, Dept Phys, Ponte Pietro Bucci Cubo 31C, I-87036 Arcavacata Di Rende, Italy.
Romoli, Marco (författare)
Univ Florence, Dept Phys & Astron, Via Giovanni Sansone 1, I-50019 Sesto Fiorentino, Italy.
Andretta, Vincenzo (författare)
Natl Inst Astrophys, Astron Observ Capodimonte, Sal Moiariello 16, I-80131 Naples, Italy.
Da Deppo, Vania (författare)
Inst Photon & Nanotechnol, Natl Res Council, Via Trasea 7, I-35131 Padua, Italy.
Heinzel, Petr (författare)
Czech Acad Sci, Astron Inst, Fricova 298, CZ-25165 Ondrejov, Czech Republic.;Univ Wroclaw, Ctr Sci Excellence Solar & Stellar Act, ul Kopernika 11, PL-51622 Wroclaw, Poland.
Moses, John D. D. (författare)
NASA, Washington, DC 20546 USA.
Naletto, Giampiero (författare)
Univ Padua, Dept Phys & Astron, Via Francesco Marzolo 8, I-35131 Padua, Italy.;Natl Inst Astrophys, Astrophys Observ Catania, Via St Sofia 78, I-95123 Catania, Italy.
Nicolini, Gianalfredo (författare)
Natl Inst Astrophys, Astrophys Observ Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy.
Spadaro, Daniele (författare)
Natl Inst Astrophys, Astrophys Observ Catania, Via St Sofia 78, I-95123 Catania, Italy.
Teriaca, Luca (författare)
Max Planck Inst Solar Syst Res, Justus Liebig Weg 3, D-37077 Gottingen, Germany.
Burtovoi, Aleksandr (författare)
Natl Inst Astrophys, Astrophys Observ Arcetri, Largo Enrico Fermi 5, I-50125 Florence, Italy.
De Leo, Yara (författare)
Max Planck Inst Solar Syst Res, Justus Liebig Weg 3, D-37077 Gottingen, Germany.;Univ Catania, Dept Phys & Astron, Via St Sofia 64, I-95123 Catania, Italy.
Jerse, Giovanna (författare)
Natl Inst Astrophys, Astron Observ Trieste, Local Basovizza 302, I-34149 Trieste, Italy.
Landini, Federico (författare)
Natl Inst Astrophys, Astrophys Observ Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy.
Pancrazzi, Maurizio (författare)
Natl Inst Astrophys, Astrophys Observ Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy.
Sasso, Clementina (författare)
Natl Inst Astrophys, Astron Observ Capodimonte, Sal Moiariello 16, I-80131 Naples, Italy.
Slemer, Alessandra (författare)
Inst Photon & Nanotechnol, Natl Res Council, Via Trasea 7, I-35131 Padua, Italy.
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Natl Inst Astrophys, Astrophys Observ Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy Univ Alabama, Ctr Space Plasma & Aeron Res, Huntsville, AL 35805 USA.;Univ Alabama, Dept Space Sci, Huntsville, AL 35805 USA. (creator_code:org_t)
2023-02-28
2023
Engelska.
Ingår i: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 944:2
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • Evidence for the presence of ion cyclotron waves (ICWs), driven by turbulence, at the boundaries of the current sheet is reported in this paper. By exploiting the full potential of the joint observations performed by Parker Solar Probe and the Metis coronagraph on board Solar Orbiter, local measurements of the solar wind can be linked with the large-scale structures of the solar corona. The results suggest that the dynamics of the current sheet layers generates turbulence, which in turn creates a sufficiently strong temperature anisotropy to make the solar-wind plasma unstable to anisotropy-driven instabilities such as the Alfven ion cyclotron, mirror-mode, and firehose instabilities. The study of the polarization state of high-frequency magnetic fluctuations reveals that ICWs are indeed present along the current sheet, thus linking the magnetic topology of the remotely imaged coronal source regions with the wave bursts observed in situ. The present results may allow improvement of state-of-the-art models based on the ion cyclotron mechanism, providing new insights into the processes involved in coronal heating.

Ämnesord

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

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