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Titel |
Pick-up process in different regions of the cometary environment |
VerfasserIn |
Zoltán Németh, Karoly Szego, Katalin Lukács, Géza Erdös |
Konferenz |
EGU General Assembly 2014
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Medientyp |
Artikel
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Sprache |
Englisch
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Digitales Dokument |
PDF |
Erschienen |
In: GRA - Volume 16 (2014) |
Datensatznummer |
250097773
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Publikation (Nr.) |
EGU/EGU2014-13384.pdf |
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Zusammenfassung |
The original distribution of the pick-up ions immediately after the pick-up is generally thought to be a ring in velocity space. Although this really is the case in a slowly-changing magnetic field, in a region of significant magnetic field fluctuations the situation is very different. In the latter case each freshly picked-up particle feels a different magnetic field. This leads to a nontrivial source distribution in velocity space, which resembles a signet-ring. The exact form of this distribution depends on the properties of the magnetic field fluctuations in the region of the pick-up, as well as on the ion species.
Here we present the theory describing the pick-up process in a fluctuating environment, as well as source distributions computed from measurements made in various regions of the induced magnetospheres of comets. |
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