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| Titel |
Analysis of suprathermal electron depletions within magnetic cloud |
| VerfasserIn |
K. Andréeová, E. Kilpua, H. Koskinen, R. Vainio, H. Hietala |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250065111
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| Zusammenfassung |
| We have analyzed a suprathermal electron depletion halo at 90° pitch angle within a
north-south oriented magnetic cloud (MC) without a leading interplanetary shock observed
by ACE and Wind at the first Lagrangian point L1 into close Earth’s vicinity on 3-4
September 2008. We suggest that depletion of halo electrons can occur as a result of
mirroring of suprathermal electrons associated with connection to magnetic field
enhancement, as a consequence of complicated internal structure of the MC, occurring
between of two nearby large-scale structures: a stream interface and a high speed stream. In
our case we propose that the stream interface is a source of sunward suprathermal electrons,
and solar heat flux electrons streaming along an open field lines of the MC are source of the
antisunward beam. |
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