No Hexagonal Wave around Saturn's Southern Pole |
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| Authors: | A Sánchez-LavegaS Pérez-Hoyos JR AcarretaRG French |
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| Institution: | a Departamento Fisica Aplicada I, E.T.S. Ingenieros, Universidad del Pais Vasco, Alameda Urquijo s/n, Bilbao, 48013, Spainf1wupsalaa@bi.ehu.esf1b Laboratorio de Astrof?́sica y F?́sica Fundamental, INTA, P.O. Box 50727, Madrid, 28080, Spainc Department of Astronomy, Wellesley College, Wellesley, Massachusetts, 02481 |
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| Abstract: | Hubble Space Telescope (HST) images (1997-2002) do not show a hexagonal wave in the south pole that is a counterpart of the northern one (D. A. Godfrey 1988, Icarus76, 335-356). However, a polar jet similar to that in which the north polar hexagonal wave is embedded has been discovered in the southern hemisphere. The HST images also reveal the existence of a small polar “cap” about 2000 km in diameter that marks the rotational pole of the planet, as well as unexpected changes in the nearby cloud structure on a timescale of years. |
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| Keywords: | Saturn |
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