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| Titel |
Anisotropic ion heating and ULF waves downstream of quasi-perpendicular bow shocks |
| VerfasserIn |
Oksana Kruparova, Jan Soucek, Vratislav Krupar, Ondrej Santolik |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250076929
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| Zusammenfassung |
| A large temperature anisotropy, as a typical feature of quasi-perpendicular bow shocks,
provides free energy that can excite mirror waves and/or ion cyclotron waves in
the downstream region. We have analyzed a large number of bow shock crossing
observed by multi-spacecraft missions (Cluster and THEMIS) with different upstream
parameters. We have studied an evolution of the ion temperature anisotropy on short
time intervals in the downstream region. This anisotropy has been compared to the
predicted one calculated as an analytical solution for anisotropic MHD shocks. Using a
time series analysis we have investigated occurrence rates and properties of both
mirror mode waves and ion cyclotron waves with respect to the upstream conditions. |
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