The spatial dependence of the Jovian auroral emissions

Details The spatial dependence of the Jovian auroral emissions The spatial dependence of the Jovian auroral emissions

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nascp2349..497s&link_type=abstract

In NASA. Goddard Space Flight Center Future of Ultraviolet Astronomy Based on Six Years of IUE Res. p 497-498 (SEE N85-20961 1

Astronomy and Astrophysics

Astronomy

Auroras, Emission, Jupiter (Planet), Spatial Dependencies, Ultraviolet Astronomy, Auroral Zones, Brightness, Iue, Northern Hemisphere, Southern Hemisphere, Variations

Scientific paper

The intensity of the north pole emissions shows a marked variation with central meridian longitude lambda CML (System III 1965 coordinates), rising to a maximum near lambda CML = 185 deg and then falling again toward zero. Because the spatial resolution in the large aperture of the short-wavelength spectrograph is not sufficient to resolve the actual auroral zone, the amount of the auroral oval contained within the aperture as a function of lambda CML cannot be explicitly determined from the observations. The observations were modeled on the basis of the geometry and the intensity of the emissions using two auroral zones taken from an O4 plus current sheet model. The observed variation in flux with lambda CML was shown to be inconsistent with a uniform brightness as a function of longitude in either the torus or the magnetotail auroral zones. Preliminary results of three observations of the south pole aurora show a definite variation in the emission flux with lambda CML. The maximum flux of the observations varies by an overall factor of 2, with a factor of approximately 1.5 deg variation within a 2-day period.

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