Journal article
Impulsive solar wind-driven emission from Uranus
Journal of Geophysical Research, Vol.94(A5), pp.5255-5263
05/01/1989
DOI: 10.1029/JA094iA05p05255
Abstract
Several days prior to the Voyager spacecraft encounter with Uranus, the plasma wave and radio astronomy receivers detected extraordinarily narrowband bursty signals, the first indication of any radio emission from the planet. The characteristics of these signals were so unusual that their identity as a natural planetary emission was questioned at first. Subsequent analysis has shown, however, that the n bursts are modulated at the 17.24-hour Uranus rotation period and are, therefore, planetary in origin. It is shown, in addition, that the typical bandwidth and time scale for the bursts are about 5 kHz and 250 ms, respectively. The phase of the rotation modulation suggests a probable source for these events in the vicinity of the north (weak) magnetic pole. The waves are right-hand polarized and are therefore emitted in the extraordinary magnetoionic mode if the emission in fact originates above the north magnetic pole.
Details
- Title: Subtitle
- Impulsive solar wind-driven emission from Uranus
- Creators
- M. D. Desch - Goddard Space Flight CenterM. L. Kaiser - Goddard Space Flight CenterW. S. Kurth - Iowa, University
- Resource Type
- Journal article
- Publication Details
- Journal of Geophysical Research, Vol.94(A5), pp.5255-5263
- DOI
- 10.1029/JA094iA05p05255
- ISSN
- 0148-0227
- eISSN
- 2156-2202
- Language
- English
- Date published
- 05/01/1989
- Description audience
- PUBLIC
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984455575402771
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