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Jupiter Radio Bursts and Particle Acceleration

Published online by Cambridge University Press:  12 April 2016

Michael D. Desch
Michael D. Desch*
Affiliation:
NASA/Goddard Space Flight Center, Greenbelt, MD, 20771

Abstract

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Particle acceleration processes are important in understanding many of the Jovian radio and plasma wave emissions. However, except for the high-energy electrons that generate synchrotron emission following inward diffusion from the outer magnetosphere, acceleration processes in Jupiter’s magnetosphere and between Jupiter and Io are poorly understood. We discuss very recent observations from the Ulysses spacecraft of two new Jovian radio and plasma wave emissions in which particle acceleration processes are important and have been addressed directly by complementary investigations. First, radio bursts known as quasi-periodic bursts have been observed in close association with a population of highly energetic electrons. Second, a population of much lower energy (keV range) electrons on auroral field lines can be shown to be responsible for the first observation of a Jovian plasma wave emission known as auroral hiss.

Subject headings: acceleration of particles — planets and satellites: individual (Jupiter) — radio continuum: solar system

Type
Planetary Environments
Information
International Astronomical Union Colloquium , Volume 142: Particle Acceleration Phenomena in Astrophysical Plasmas , 1994 , pp. 541 - 546
Copyright
Copyright © The American Astronomical Society 1994

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