On the role of wave-particle interactions in the evolution of solar wind ion distribution functions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F10%3A00355922" target="_blank" >RIV/68378289:_____/10:00355922 - isvavai.cz</a>
Alternative codes found
RIV/67985815:_____/10:00481888
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
On the role of wave-particle interactions in the evolution of solar wind ion distribution functions
Original language description
We investigate the role of kinetic effects in the solar wind expansion using 1-D numerical hybrid simulations. The analysis of proton distribution functions in the solar wind shows a non-adiabatic evolution and suggests that several kinetic processes areat work during the expansion. From simulation studies wave-particle and wave-wave interactions, as cyclotron heating and non-linear trapping due to parametric instabilities, are found to play an important role on constraining the proton temperature anisotropy and generating secondary velocity beams. We report results from hybrid comoving simulations that self-consistently retain and describe these processes. We find that cyclotron interactions control the evolution of the proton temperature anisotropywith distance providing a perpendicular heating which contrasts the adiabatic cooling caused by the expansion. At the same time ion-acoustic modes driven by parametric effects produce a velocity beam in the proton distribution function.
Czech name
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Czech description
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Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Twelfth International Solar Wind Conference. Proceedings Paper
ISBN
978-0-7354-0759-6
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
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Publisher name
Melville
Place of publication
New York
Event location
Saint-Milo
Event date
Jun 21, 2009
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000281438100053

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