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| Titel |
Multi-spacecraft observations of quasi-perpendicular shock non-stationarity |
| VerfasserIn |
Andreas Johlander, Andris Vaivads, Yuri Khotyaintsev, Ivy Bo Peng, Stefano Markidis, Steven Schwartz, Mats André, Per-Arne Lindqvist, Robert Ergun, Roy Torbert, Werner Magnes, Christopher T. Russell, Barbara Giles, Craig J. Pollock, Jim Burch |
| 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 |
250133576
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| Publikation (Nr.) |
 EGU/EGU2016-14203.pdf |
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| Zusammenfassung |
| Shock non-stationarity is a known problem within collisionless shock physics. Shock
non-stationarity is important because it can influence the fraction of ions that are reflected and
accelerated. In simulations, shock surfaces have been shown to fluctuate quasi-periodically
with frequency roughly equal to the ion gyroperiod. We present in situ, multi-spacecraft
observations by the MMS spacecraft of shock non-stationarity at the quasi-perpendicular
terrestrial bow shock. The spacecraft separation is well below the ion gyroradius. Therefore,
we can study the shock on small spatial scales. We present observations, which show
time-variability in ion reflection and subsequent shock drift acceleration. Because of the
small spacecraft separation and high-time-resolution ion data, MMS allows for a detailed
study of shock non-stationarity. |
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