Cusp observation at Saturn's high-latitude magnetosphere by the Cassini spacecraft

Cusp observation at Saturn's high-latitude magnetosphere by the Cassini spacecraft

We report on the first analysis of magnetospheric cusp observations at Saturn by multiple in situ instruments onboard the Cassini spacecraft. Using this we infer the process of reconnection was occurring at Saturn's magnetopause. This agrees with remote observations that showed the associated a...

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Veröffentlicht in:Geophysical research letters. - 1984. - 41(2014), 5 vom: 16. März, Seite 1382-1388
1. Verfasser: Jasinski, J M (VerfasserIn)
Weitere Verfasser: Arridge, C S, Lamy, L, Leisner, J S, Thomsen, M F, Mitchell, D G, Coates, A J, Radioti, A, Jones, G H, Roussos, E, Krupp, N, Grodent, D, Dougherty, M K, Waite, J H
Format: Aufsatz
Sprache:English
Veröffentlicht: 2014
Zugriff auf das übergeordnete Werk:Geophysical research letters
Schlagworte:Journal Article Cassini cusp dispersion plasma reconnection
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520 |a We report on the first analysis of magnetospheric cusp observations at Saturn by multiple in situ instruments onboard the Cassini spacecraft. Using this we infer the process of reconnection was occurring at Saturn's magnetopause. This agrees with remote observations that showed the associated auroral signatures of reconnection. Cassini crossed the northern cusp around noon local time along a poleward trajectory. The spacecraft observed ion energy-latitude dispersions-a characteristic signature of the terrestrial cusp. This ion dispersion is "stepped," which shows that the reconnection is pulsed. The ion energy-pitch angle dispersions suggest that the field-aligned distance from the cusp to the reconnection site varies between ∼27 and 51 RS . An intensification of lower frequencies of the Saturn kilometric radiation emissions suggests the prior arrival of a solar wind shock front, compressing the magnetosphere and providing more favorable conditions for magnetopause reconnection 
520 |a KEY POINTS: We observe evidence for reconnection in the cusp plasma at SaturnWe present evidence that the reconnection process can be pulsed at SaturnSaturn's cusp shows similar characteristics to the terrestrial cusp 
650 4 |a Journal Article 
650 4 |a Cassini 
650 4 |a cusp 
650 4 |a dispersion 
650 4 |a plasma 
650 4 |a reconnection 
700 1 |a Arridge, C S  |e verfasserin  |4 aut 
700 1 |a Lamy, L  |e verfasserin  |4 aut 
700 1 |a Leisner, J S  |e verfasserin  |4 aut 
700 1 |a Thomsen, M F  |e verfasserin  |4 aut 
700 1 |a Mitchell, D G  |e verfasserin  |4 aut 
700 1 |a Coates, A J  |e verfasserin  |4 aut 
700 1 |a Radioti, A  |e verfasserin  |4 aut 
700 1 |a Jones, G H  |e verfasserin  |4 aut 
700 1 |a Roussos, E  |e verfasserin  |4 aut 
700 1 |a Krupp, N  |e verfasserin  |4 aut 
700 1 |a Grodent, D  |e verfasserin  |4 aut 
700 1 |a Dougherty, M K  |e verfasserin  |4 aut 
700 1 |a Waite, J H  |e verfasserin  |4 aut 
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