Observations from earth orbit and variability of the polar aurora on Jupiter
Journal Article
·
· Astrophys. J., Lett. Ed.; (United States)
Spatially resolved spectra of Jupiter taken with the International Ultraviolet Explorer satellite show enhanced emissions from the polar regions at H L..cap alpha.. (1216 A) and in the Lyman and Werner bands of H/sub 2/ (1175--1650 A). Two types of variability in emission brightness have observed in these aurorae: an increase in the observed emission as the auroral oval rotates with Jupiter's magnetic pole to face toward the Earth and a general variation in brightness of more than an order of magntiude under nearly identical observing conditions. In addition, the spectral character of these aurorae (determined by the ratio of H L..cap alpha.. to H/sub 2/ brightnesses) appears variable, indicating that the depth of penetration of the auroral particles is not constant.
- Research Organization:
- Department of Physics, Johns Hopkins University
- OSTI ID:
- 6981678
- Journal Information:
- Astrophys. J., Lett. Ed.; (United States), Journal Name: Astrophys. J., Lett. Ed.; (United States) Vol. 241:3; ISSN AJLEA
- Country of Publication:
- United States
- Language:
- English
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