Does Turbulence along the Coronal Current Sheet Drive Ion Cyclotron Waves?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F23%3A00571137" target="_blank" >RIV/67985815:_____/23:00571137 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0342429" target="_blank" >https://hdl.handle.net/11104/0342429</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-4357/acb693" target="_blank" >10.3847/1538-4357/acb693</a>
Alternative languages
Result language
angličtina
Original language name
Does Turbulence along the Coronal Current Sheet Drive Ion Cyclotron Waves?
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astrophysical Journal
ISSN
0004-637X
e-ISSN
1538-4357
Volume of the periodical
944
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
227
UT code for WoS article
000942628400001
EID of the result in the Scopus database
2-s2.0-85149452773