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| Titel |
Nonaxisymmetrical beaming cone of radio waves produced by cyclotron maser instability in inhomogeneous medium |
| VerfasserIn |
Patrick Galopeau, Mohammed Boudjada, Helmut Rucker |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250110311
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| Publikation (Nr.) |
 EGU/EGU2015-10294.pdf |
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| Zusammenfassung |
| The results we have recently obtained about the beaming of the Io-controlled decameter
Jovian radio emission allow us to conclude that this radiation is emitted in a hollow cone
flattened in a particular direction linked to the local magnetic field. The existence of such an
emission cone leads us to understand the location of the Io-controlled sources (Io-A, Io-B,
Io-C, and Io-D) in the CML-Io phase diagram and to interpret their dependence on the
longitude as the manifestation of a Jovian active longitude sector, where the emission
mechanism is the most efficient. We study the origin of the flattening of the emission cone in
the framework of a radio emission produced by the cyclotron maser instability in an
inhomogeneous medium where the local magnetic field B and the gradient of its
modulus /B are not parallel, i.e., in a geometry without axial symmetry. We consider
that the radiation propagates in the source region in the X-mode near its cutoff
frequency. |
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