Periodicities in Jupiter's magnetotail

Details Periodicities in Jupiter's magnetotail Periodicities in Jupiter's magnetotail

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm13d2104p&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SM13D-2104

Physics

[2731] Magnetospheric Physics / Magnetosphere: Outer, [2744] Magnetospheric Physics / Magnetotail, [5734] Planetary Sciences: Fluid Planets / Magnetic Fields And Magnetism, [5737] Planetary Sciences: Fluid Planets / Magnetospheres

Scientific paper

The New Horizons spacecraft had a close flyby of Jupiter in 2007. The Pluto energetic particle spectrometer science investigation (PEPSSI) made measurements beginning early in the same year. It obtained data as the spacecraft flew inward through closest approach and out down Jupiter's magnetotail. Measurements of ions and electrons were obtained to tail distances of over 1 AU. General surveys of electron data from PEPSSI revealed increases in intensity at approximately the spin period of the planet. These periodic variations were obtained well down the tail. It is not completely understood whether there is a periodic source of particles that remain coherent to large distances or whether the planet's period is somehow communicated down the tail. In this work, we will discuss the PEPSSI data by species to study the periodicities in the data and to constrain the source of these phenomena. In the past, other spacecraft data have revealed multiple periodicities much closer to the planet. These have been associated with both the planet's rotation and the periodic release of plasma down the tail.

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