Impact of Self-Gravity at the Encke Gap Edge

Details Impact of Self-Gravity at the Encke Gap Edge Impact of Self-Gravity at the Encke Gap Edge

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004dps....36.1902l&link_type=abstract

American Astronomical Society, DPS meeting #36, #19.02; Bulletin of the American Astronomical Society, Vol. 36, p.1109

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the results of several numerical simulations of the outer edge of the Encke gap that include collisions and particle self-gravity. There are a number of significant interactions between the moon-induced wakes and the gravity wakes. In this talk we focus primarily on features that form at the edge of the ring, how those features might evolve over multiple synodic periods, and how these various features might appear in Cassini observations. The primary features seen in the edge region include a thickening of material that appears to fuel an increase in the strength of the gravity wakes. In our simulation, the gravity wakes are seen to grow as long as 3-km in length, more than 10 times longer than normal. These structures form as the particles move out into the gap after the moon wakes produce a high-density region. They are destroyed and reform as the ring particles move along the wavy edge of the gap.

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