The phase of the ten-hour modulation in the Jovian magnetosphere /Pioneers 10 and 11/

Details The phase of the ten-hour modulation in the Jovian magnetosphere /Pioneers 10 and 11/ The phase of the ten-hour modulation in the Jovian magnetosphere /Pioneers 10 and 11/

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.5763f&link_type=abstract

Journal of Geophysical Research, vol. 84, Oct. 1, 1979, p. 5763-5772.

Physics

Jupiter (Planet), Particle Acceleration, Planetary Magnetic Fields, Planetary Magnetospheres, Periodic Variations, Pioneer 10 Space Probe, Pioneer 11 Space Probe, Jupiter, Magnetosphere, Pioneer 10, Pioneer 11, Electrons, Models, Configuration, Phases, Electron Flux, Spectrum, Analysis, Particles

Scientific paper

The paper describes the study of the phase of the 10-hour modulation of energetic electrons seen by Pioneers 10 and 11 in the Jovian magnetosphere. Attention is given to the peaks rather than the valleys of each cycle because the peaks are where physically interesting features occur, such as particle acceleration, current sheets, etc. To identify the peaks, it is required that the instantaneous intensity be higher than the 5-hour running average and the 5-hour running average be greater than the 10-hour running average. These criteria select an interval rather than a point and it is determined that this interval is an appropriate estimate of the experimental uncertainty. When the phases of the peaks are plotted together, they create patterns which are discussed in terms of disk-like, clock-like, and rotating anomaly models of the magnetosphere. Each model fits some of the data, but no model explains all of the data convincingly. It is concluded that there is still no understanding of the configuration of the outer Jovian magnetosphere.

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