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Rotation period of Jupiter from the observation of its magnetic field

Russell, C. T.; Yu, Z. J.

To determine the Jovian internal rotation rate, historically one has used the repetition period (periodicity) of decametric and decimetric radio waves. The period with which decametric and decimetric radio waves recur on Jupiter (the System III period) was defined by the IAU in 1965 to be 9h 55m 29.71s, based on early radio astronomical data. A mo…

Radial and latitudinal gradients of anomalous cosmic ray oxygen in the inner heliosphere

Mewaldt, R. A.; Cummings, A. C.; Marsden, R. G. +2 more

We use data from the Ulysses, Advanced Composition Explorer, and Solar Terrestrial Relations Observatory spacecraft to determine the radial and latitudinal gradients of anomalous cosmic ray oxygen in two energy ranges from 4.5-15.6 MeV/nuc in the inner heliosphere for the first time during an A<0 part of the solar cycle. Using measurements from…