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| Titel |
Periodic bursts of non-Io DAM and its relationship to Jovian aurora phenomena |
| VerfasserIn |
Helmut O. Rucker, Mykhaylo Panchenko, Denis Grodent, Aikaterini Radioti |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250052505
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| Zusammenfassung |
| Periodic radio bursts of the non-Io component of Jovian decametric radio emission (non-Io DAM), recently revealed in the dynamic radio spectra recorded by STEREO/WAVES, Wind/WAVES and Cassini/RPWS, typically recur during several Jovian days with an averaged period of ~10.07 hours which is ~1.5% longer than the rotation period of the Jovian magnetosphere. The bursts are observed in a decametric frequency range from ~4 MHz to ~12-16 MHz between 300° and 60° of Jovian Central Meridian Longitude (CML). The stereoscopic multispacecraft observations have shown that the radio sources of the periodic bursts sub-corotate with Jupiter and can be active during several Jupiter rotations.
In this study we discuss the relation between the occurrence of the periodic radio bursts of non-Io DAM, solar wind activity at Jupiter and sub-corotating long lasting ultraviolet arcs of Jovian aurora. The aurora phenomena were imaged by the Hubble Space Telescope during two aurora campaigns in winter 2000 /2001 and February - March and May - June 2007. We suggest that the periodic non-Io DAM bursts and sub-corotating UV arcs are deeply connected with the complex interaction between the Jovian magnetosphere and co-rotating highly structured plasma environment. |
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