Hubble Space Telescope imaging of the north polar aurora on Jupiter

Details Hubble Space Telescope imaging of the north polar aurora on Jupiter Hubble Space Telescope imaging of the north polar aurora on Jupiter

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992sci...257.1512c&link_type=abstract

Science (ISSN 0036-8075), vol. 257, no. 5076, Sept. 11, 1992, p. 1512-1515.

Astronomy and Astrophysics

Astronomy

47

Auroras, Faint Object Camera, Hubble Space Telescope, Jupiter (Planet), Jupiter Atmosphere, Ulysses Mission, Io, Polar Regions, Satellite-Borne Instruments, Toruses, Ultraviolet Astronomy

Scientific paper

The first direct images of the Jovian aurora at ultraviolet wavelengths were obtained by the Hubble Space Telescope Faint Object Camera near the time of the Ulysses spacecraft encounter with Jupiter on 8 February 1992. The auroral oval is not uniformly luminous. It exhibits a brightness minimum in the vicinity of longitude 180 deg. In the few images available, the brightest part of the oval occurs in late afternoon Jovian time. The observed oval is not concentric with calculated ovals in the O6 model of Connerney. The size of the oval is consistent with auroral particles on field lines with magnetic L parameter greater than 8, indicating significant migration from Io, its torus, or both, if these are their origins.

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