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Victor Herrero Radio Astronomy Blog

Periodic bursts of Jovian non-Io decametric radio emission strongly correlated with solar wind ram pressure

6 Aug 2014, 18:26 UTC
Periodic bursts of Jovian non-Io decametric radio emission strongly correlated with solar wind ram pressure
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Periodic bursts of Jovian non-Io decametric radio emission strongly correlated with solar wind ram pressurePanchenko, M.; Rucker, H. O.; Farrell, W. M. [ AA(Space Research Institute AAS, Graz, Austria), AB(Space Research Institute AAS, Graz, Austria), AC(NASA Goddard Space Flight Center, Greenbelt, MD, USA)] 2013http://adsabs.harvard.edu/abs/2013P%26SS...77....3PWith many thanks to Tom Ashcraft, who brought it to my attention, I provide the link to this very interesting paper (free 2 MB pdf):http://www.sciencedirect.com/science/article/pii/S0032063312002528/pdf?md5=d8d302c46ea00bae36dbecb5bdcc6359&pid=1-s2.0-S0032063312002528-main.pdf Abstract: "During the years 2000-2011 the radio instruments onboard Cassini, Wind and STEREO spacecraft have recorded a large amount of the Jovian decametric radio emission (DAM). In this paper we report on the analysis of the new type of Jovian periodic radio bursts recently revealed in the decametric frequency range. These bursts, which are non-Io component of DAM, are characterized by a strong periodic reoccurrence over several Jovian days with a period ≈1.5% longer than the rotation rate of the planet's magnetosphere (System III). The bursts are typically observed between 4 and 12 MHz and their occurrence probability has been found to be significantly higher in the sector of Jovian Central Meridian Longitude between 300° and 60° (via 360°). The stereoscopic multispacecraft observations have shown that the radio sources of the periodic ...

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