A baseline spectroscopic study of the infrared Auroras of Jupiter

Hoanh An Lam, Nicholas Achilleos, Steven Miller, Jonathan Tennyson, Laurence M. Trafton, Thomas R. Geballe, Gilda E. Ballester

Research output: Contribution to journalArticlepeer-review

84 Scopus citations

Abstract

We present the results of a spectroscopic study of the H+3infrared emissions of Jupiter, obtained using the United Kingdom Infrared Telescope (UKIRT) on Mauna Kea, Hawaii, during May 3-5, 1993. Although we have obtained data from the whole of the planet, in this paper we concentrate on the auroral regions. Derived H+3temperatures for these vary between 700 and 1000 K, and column densities are of the order of 1012cm-2. There is a strong (anti-)correlation between these parameters, however, that requires the introduction of new variables to characterize the jovian auroras fully. The total H+3auroral emission is presented as a function of central meridian longitude. A simple geometric model of this emission does not describe the data adequately. The integrated infrared auroral emission in each hemisphere is of the order of a few × 1012W, making it comparable to auroral output in the ultraviolet.

Original languageEnglish (US)
Pages (from-to)379-393
Number of pages15
JournalIcarus
Volume127
Issue number2
DOIs
StatePublished - Jun 1997
Externally publishedYes

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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