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Article Dans Une Revue Geophysical Research Letters Année : 2010

New periodicity in Jovian decametric radio emission

Résumé

We report on the finding of a new periodicity in the Jovian decametric radio emission (DAM). Periodic bursts of non-Io component of DAM which recur with a period 1.5% longer than the Jupiter rotation (System III) have been found in the dynamic radio spectra acquired by STEREO/WAVES, Wind/WAVES and Cassini/RPWS during the years 2002-2008. Typically, the bursts appear very periodically over several Jovian days with a decreasing intensity and they display a negative frequency drift. All the bursts were detected within the same sector of Jovian Central Meridian Longitude (III), between 300° and 60° (via 360°) of CML (III), close to the region of the non-Io-C source. No correlation has been found with the position of Io. Considering the simultaneous stereoscopic observations onboard STEREO-A and STEREO-B, as well as Wind and Cassini we can conclude that the sources of the periodic bursts most probably sub-corotate with Jupiter.
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hal-03729559 , version 1 (19-08-2022)

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Mykhaylo Panchenko, Helmut O. Rucker, Michael L. Kaiser, O. C. St. Cyr, Jean-Louis Bougeret, et al.. New periodicity in Jovian decametric radio emission. Geophysical Research Letters, 2010, 37, pp.05106. ⟨10.1029/2010GL042488⟩. ⟨hal-03729559⟩
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