Seasonal Variations in the North-South Asymmetry of Polarized Light of Jupiter

Details Seasonal Variations in the North-South Asymmetry of Polarized Light of Jupiter Seasonal Variations in the North-South Asymmetry of Polarized Light of Jupiter

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002icar..157..419s&link_type=abstract

Icarus, Volume 157, Issue 2, p. 419-425.

Physics

9

Scientific paper

Over an 18-year period, seasonal changes in the north-south asymmetry of polarization at high latitudes of Jupiter have been revealed by polarimetric observations in blue light. The average seasonal difference in the polarization degree between north and south is positive and equal to about 0.5%. There is some relationship between seasonal variations in the observed difference and the seasonal north-south asymmetry in solar radiation incident on Jupiter's atmosphere. There are two maxima on the observed seasonal curve, falling on the jovian spring and autumn and coinciding correspondingly with positive and negative maxima of the heliographic latitude of Jupiter. Two possible explanations are discussed: seasonal changes in insolation and/or time-dependent magnetospheric influence on the polar events.

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