Temperatures of the Jovian auroral zone inferred from 2-micron H2 quadrupole line observations

Details Temperatures of the Jovian auroral zone inferred from 2-micron H2 quadrupole line observations Temperatures of the Jovian auroral zone inferred from 2-micron H2 quadrupole line observations

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...84...54k&link_type=abstract

Icarus (ISSN 0019-1035), vol. 84, March 1990, p. 54-61.

Physics

32

Atmospheric Temperature, Auroral Zones, Hydrogen, Jupiter Atmosphere, Infrared Radiation, Line Spectra, Quadrupoles, Jupiter, Temperature, Auroras, Quadrupole Moment, Hydrogen, Intensity, Kinetics, Concentration, Emissions, Wavelengths, Atmosphere, Earth-Based Observations, Spectrometry, Telescope Methods

Scientific paper

On the basis of the observed intensities of the S1(0), S1(1), and S1(2) 2-micron H2 quadrupole lines in the southern auroral zone of Jupiter, a rotational temperature of 730 (+ 490/-200) K in the 0.01-1.0 microbar range is derived which is judged to represent the local neutral kinetic temperature. Although the dominance of nonthermal emission is indicated for these lines by the factor-of-500 predominance of the H2(nu = 1) auroral zone population over the normal Boltzmann population, a calculation of both thermal and nonthermal intensities of the pure H2 rotational quadrupole lines yields the opposite results in the greater-than-5 micron wavelength region.

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