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Europa's FUV auroral tail on Jupiter

Clarke, J. T.; Mauk, B. H.; Gérard, J. -C. +3 more

Ultraviolet images of Jupiter's northern aurora obtained in 2005 confirm the existence of an electromagnetic interaction between Europa and the Jovian ionosphere. The auroral signature shows a two-component structure: a quasi-circular Europa spot, followed by a previously undetected faint tail emission trailing in the direction of corotation flow.…

Implication for the solar wind effect on the Io plasma torus

Kimura, T.; Misawa, H.; Yamamoto, H. +7 more

Sporadic enhancements of [SII] 673.1 nm emissions from the Io plasma torus were found in ground-based observations in 1998 and 1999. Just after the onset of the enhancement on September 21, 1999, narrow-band kilometric (nKOM) radiation began to be observed by the Galileo/PWS in the Jovian magnetosphere. During this period, quasi-periodic burst gro…