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| Titel |
Modification and relaxation of turbulence behind interplanetary shocks |
| VerfasserIn |
Alexander Pitna, Jana Safrankova, Zdenek Nemecek, Frantisek Nemec, Oleksandr Goncharov, Christopher H. K. Chen |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250123715
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| Publikation (Nr.) |
 EGU/EGU2016-3013.pdf |
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| Zusammenfassung |
| The solar wind is a weakly collisional super-Alfvenic expanding flow of the ejected solar
plasma. This flow is highly turbulent and it plays an essential role in solar wind heating.
Interplanetary shocks (IP) are an inseparable part of the solar wind and they increase
the solar wind temperature via dissipation of a portion of the kinetic energy at the
shock ramp. In downstream of IP shocks, turbulence is enhanced with respect to a
level of upstream plasma fluctuations. We used the high cadence (31 ms) plasma
measurements from the BMSW instrument on board the Spektr-R spacecraft. A
unique time resolution allows us to study the transition from an inertial range of
turbulence up to the scales where the kinetic effects become dominant. In this paper, we
focus mainly on a relaxation of the increased level of the turbulent fluctuations
showing that it takes hours for the solar wind to reach its un-shocked upstream state. |
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