Journal article
Electrostatic waves in the bow shock at Uranus
JGR. Journal of geophysical research. Part A, Space physics, Vol.94(10), pp.13367-13376
1989
DOI: 10.1029/JA094iA10p13367
Abstract
Electrostatic emissions measured by the Voyager 2 plasma wave detector (PWS) during the inbound crossing of the Uranian bow shock are shown to differ in some aspects from the waves measured during bow shock crossings at Jupiter and Saturn. The wave amplitudes in the foot of the bow shock at Uranus are in general much lower than those detected at the other outer planets due to the unusually enhanced solar wind ion temperature during the crossing. This reduces the effectiveness of wave-particle interactions in heating the incoming electrons. Strong wave emissions are observed in the shock ramp that possibly arise from currents producing a Buneman mode instability. Plasma instrument (PLS) and magnetometer (MAG) measurements reveal a complicated shock structure reminiscent of computer simulations of high-Mach number shocks when the effects of anomalous resistivity are reduced, and are consistent with high ion temperatures restricting the growth of electrostatic waves.
Details
- Title: Subtitle
- Electrostatic waves in the bow shock at Uranus
- Creators
- S. L Moses - TRW space technology group, Redondo Beach CA 90278, United StatesF. V Coroniti - TRW space technology group, Redondo Beach CA 90278, United StatesC. F Kennel - TRW space technology group, Redondo Beach CA 90278, United StatesF Bagenal - National Center for Atmospheric ResearchR. P Lepping - Goddard Space Flight CenterK. B Quest - University of California, San DiegoW. S Kurth - University of IowaF. L Scarf - TRW space technology group, Redondo Beach CA 90278, United States
- Resource Type
- Journal article
- Publication Details
- JGR. Journal of geophysical research. Part A, Space physics, Vol.94(10), pp.13367-13376
- Publisher
- American Geophysical Union
- DOI
- 10.1029/JA094iA10p13367
- ISSN
- 0148-0227
- eISSN
- 2156-2202
- Language
- English
- Date published
- 1989
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984455753102771
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