Rotational evolution of self-gravitating aggregates with heterogeneous interiors
What is it about?
This paper looks at the evolution of spherical, self-gravitating aggregates (a representation of small asteroids) when their interiors are either stronger or weaker than their surfaces. We show that there is a specific relative strength for the interior so that early failure is avoided and that it is possible to obtain a shape similar to that of asteroid Itokawa (visited by the Hayabusa mission) if a weak interior is considered.
Why is it important?
Though much of the work that has been done about asteroid considers them to be homogeneous, there is not special reason to consider that this assumption is correct. Furthermore, some observations together with theoretical work have shown that for some asteroids, a interiors of different strength are a real possibility. However, this has not been systematically investigated.
The following have contributed to this page: Dr Diego P Sánchez Lana
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