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| Titel |
Magnetic reconnection at the magnetopause: Low-energy ions and modification of the Hall physics |
| VerfasserIn |
Mats André, Wenya Li, Sergio Toledo-Redondo, Andris Vaivads, Yuri Khotyaintsev, Daniel Graham, Cecilia Norgren, James Burch, Per-Arne Lindqvist, Robert Ergun, Roy Torbert, Werner Magnes, Christopher Russell, Barbara Giles, Craig Pollock |
| 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 |
250132705
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| Publikation (Nr.) |
 EGU/EGU2016-13235.pdf |
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| Zusammenfassung |
| We use statistics from the Cluster spacecraft and show that low-energy ions with energies less than tens of eV originating from the ionosphere are common just inside the magnetopause. During magnetopause magnetic reconnection events, these low-energy ions remain magnetized down to smaller length-scales than the hot (keV) magnetospheric ions, introducing a new scale. When magnetized low-energy ions are present, the Hall currents carried by electrons can be partially cancelled by these ions. The electrons and the magnetized low-energy ions ExB drift together. We investigate magnetic reconnection separatrices at various magnetopause locations, using MMS and Cluster spacecraft observations. We verify that when a mixture of ions of very different temperatures is present in reconnecting plasmas, the microphysics related to the Hall effect is significantly modified. |
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