Journal article
Theory and observations of electrostatic ion waves in the cold Io torus
Journal of Geophysical Research, Vol.95(A5), pp.6443-6450
05/01/1990
DOI: 10.1029/JA095iA05p06443
Abstract
A study of the ELF plasma wave environment of the cold Io torus in Jupiter's magnetosphere is made. Voyager 1 data are presented which show three distinct types of electrostatic ion waves occurring there: the Buchsbaum ion-ion mode just below the proton cyclotron frequency f(cp), hydrogen Bernstein modes at (n + 1/2) f(cp), and lower hybrid waves near f(LHR). The presence of these waves at their characteristic frequencies is consistent with a predominantly heavy ion plasma composed of singly ionized sulfur and oxygen ions along with a small admixture of protons. The hydrogen Bernstein modes are tightly confined to the magnetic equator, occurring within + or - 4 deg of it, while the Buchsbaum mode is localized to the dense heavy ion plasma of the cold torus near the centrifugal equator. A general theory for excitation of the waves based on the ion pickup process is developed.
Details
- Title: Subtitle
- Theory and observations of electrostatic ion waves in the cold Io torus
- Creators
- D. D. Barbosa - California State University Los AngelesW. S. Kurth - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of Geophysical Research, Vol.95(A5), pp.6443-6450
- DOI
- 10.1029/JA095iA05p06443
- ISSN
- 0148-0227
- eISSN
- 2156-2202
- Language
- English
- Date published
- 05/01/1990
- Description audience
- PUBLIC
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984455758902771
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