Imaging Jupiter's aurorae from H3(+) emissions in the 3-4 micron band

Details Imaging Jupiter's aurorae from H3(+) emissions in the 3-4 micron band Imaging Jupiter's aurorae from H3(+) emissions in the 3-4 micron band

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991natur.353..539b&link_type=abstract

Nature (ISSN 0028-0836), vol. 353, Oct. 10, 1991, p. 539-542. Research supported by SERC.

Physics

77

Auroras, Emission Spectra, Hydronium Ions, Jupiter Atmosphere, Image Analysis, Infrared Spectra, Planetary Ionospheres, Spatial Distribution, Ultraviolet Emission

Scientific paper

A series of images of Jupiter recorded at wavelengths sensitive to emission by H3(+) are presented which reveal the spatial distribution of excited H3(+) molecular ions in the Jovian ionosphere as seen from earth. It is believed that they provide high spatial resolution images of polar aurorae on Jupiter. They suggest that the intensity of the auroral emission can vary on a timescale of an hour, a shorter period than had previously been noted. It is also found that the spatial distribution of H3(+) emission correlates only partially with the loci of auroral activity inferred from ultraviolet and longer wavelength infrared observations. The H3(+) emission may therefore be controlled by auroral processes that are different from those responsible for the ultraviolet and infrared emissions.

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