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Latitudinal beaming of Jupiter's low frequency radio emissions
- Source :
- Journal of Geophysical Research. 84:5167
- Publication Year :
- 1979
- Publisher :
- American Geophysical Union (AGU), 1979.
-
Abstract
- By comparing RAE-1 and IMP-6 satellite measurements of Jupiter's radio emission near 1MHz with recent Voyager-1 and 2 observations in the same frequency range, the properties of the low frequency radiation pattern over a 10 deg range of latitudes with respect to the Jovian rotation equator can be studied. These observations, which cover a wider latitudinal range than is possible from the earth, are consistent with many aspects of earlier ground-based measurements used to infer a sharp beaming pattern for the decameter wavelength emissions. Marked, systematic changes are found in the statistical occurrence probability distributions with system 3 central meridian longitude as the jovigraphic latitude of the observer changes over this range. Simultaneous observations by the two Voyager spacecraft suggest that the instantaneous beam width may be no more than a few degrees at times. The new hectometer-wave results can be interpreted in terms of a narrow, curved sheet at a fixed magnetic latitude into which the emission is beamed to escape the planet.
- Subjects :
- Physics
Atmospheric Science
Ecology
Equator
Paleontology
Soil Science
Astronomy
Forestry
Aquatic Science
Oceanography
Jovian
Latitude
Jupiter
Wavelength
Geophysics
Space and Planetary Science
Geochemistry and Petrology
Planet
Physics::Space Physics
Earth and Planetary Sciences (miscellaneous)
Satellite
Astrophysics::Earth and Planetary Astrophysics
Longitude
Earth-Surface Processes
Water Science and Technology
Subjects
Details
- ISSN :
- 01480227
- Volume :
- 84
- Database :
- OpenAIRE
- Journal :
- Journal of Geophysical Research
- Accession number :
- edsair.doi...........0612b7591260f7b838588a6d9f6f59ce
- Full Text :
- https://doi.org/10.1029/ja084ia09p05167