Variability of Lyman-alpha emission from Jupiter

Details Variability of Lyman-alpha emission from Jupiter Variability of Lyman-alpha emission from Jupiter

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...234l.151c&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 234, Dec. 1, 1979, p. L151-L154.

Astronomy and Astrophysics

Astronomy

6

Emission Spectra, Jupiter Atmosphere, Lyman Alpha Radiation, Planetary Radiation, Hydrogen Atoms, Line Spectra, Solar Activity Effects, Ultraviolet Astronomy, Jupiter, Emission, Lyman-Alpha Radiation, Spectrometer, Oao 3, Atmosphere, Hydrogen, Ultraviolet Radiation, Spectrum, Solar Activity, Dissociation, Methane, Comparisons, Equipment, Doppler Effect, Data, Techniques, Observations, Data Reduction, Intensity, Scattering, Density, Models, Mesopause, Thermosphere

Scientific paper

The Jovian Lyman-alpha emission line was reobserved in 1978 March using the high-resolution spectrometer of the Copernicus satellite. An intensity of 8.3 plus or minus 2.9 kilorayleighs was measured. This value represents a significant increase in intensity over previous (1976) Copernicus observations, but is lower than the recent (1979) values obtained by Voyager 1 and IUE. The increase in intensity has been accompanied by a significant increase in line width giving strong support to the theory that the emission results from resonant scattering of the solar Lyman-alpha line by H atoms in the upper Jovian atmossphere. The strength of Jovian Lyman-alpha emission correlates well with the level of solar activity. The solar extreme ultraviolet radiation varies with the solar cycle. This radiation causes the dissociation of H2 and CH4 into H atoms in the Jovian atmosphere. Therefore, in times of high solar activity, the H column density will increase, causing the observed strong Jovian Lyman-alpha emission.

Affiliated with

Also associated with

No associations

Rating

Variability of Lyman-alpha emission from Jupiter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Variability of Lyman-alpha emission from Jupiter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variability of Lyman-alpha emission from Jupiter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1443301