Analysing the New Saturnian Rings, R/2004 S1 and R/2004 S2 |
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| Authors: | S M Giuliatti Winter R Sfair D C Mourão T A Bastos |
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| Institution: | 1. UNESP – Campus de Guaratinguetá, Av. Ariberto P. da Cunha, 333, Guaratingueta, S?o Paulo, 12500000, Brazil
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| Abstract: | The Cassini-Huygens arrival into the Saturnian system brought a large amount of data about the satellites and rings. Two diffuse rings were found in the region between the A ring and Prometheus. R/2004 S1 is coorbital to Atlas and R/2004 S2 is close to Prometheus. In this work we analysed the closest approach between Prometheus and both rings. As a result we found that the satellite removes particles from R/2004 S2 ring. Long-term numerical simulations showed that some particles can cross the F ring region . The well known region of the F ring, where small satellites are present and particles are being taking from the ring, gains a new insight with the presence of particles from R/2004 S2 ring. The computation of the Lyapunov Characteristic Exponent reveled that the R/2004 S2 ring lies in a chaotic region while R/2004 S1 ring and Atlas are in a stable region. Atlas is responsible for the formation of three regimes in the R/2004 S1 ring, as expected for a satellite embedded in a ring. |
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| Keywords: | Lyapunov Characteristic Exponent numerical simulations planetary rings |
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