A modified "Type I migration" model for propeller moons in Saturn's rings
Earth and Planetary Astrophysics
2015-06-05 v1
Abstract
We propose a mechanism for the observed non-keplerian motion (Tiscareno et al. 2010, ApJL) of "propeller" moons embedded in Saturn's rings. Our mechanism, in which radial variations in surface density -- external to, and unaffected by, the embedded moon -- result in an equilibrium semimajor axis for the moon due to "Type I" angular momentum exchange (Crida et al. 2010, AJ), provides a good fit to the observations. Future observations should distinguish between our model and others recently proposed.
Keywords
Cite
@article{arxiv.1206.4942,
title = {A modified "Type I migration" model for propeller moons in Saturn's rings},
author = {Matthew S. Tiscareno},
journal= {arXiv preprint arXiv:1206.4942},
year = {2015}
}
Comments
10 pages, 7 figures; Accepted to Planetary & Space Science