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Angle of Repose-limited Rubble Piles with Rotation

Wednesday, October 17, 2007
Minton (LPL, U of AZ)

What would a self-gravitating, rotating rubble pile look like if every slope on the surface was at the angle of repose?

A new numerical technique, called ``seed growth" is demonstrated to solve the geometrical problem of constructing uniform density, three-dimensional objects for which the surface at every point is at a constant angle relative to the local horizontal. An implementation of the seed growth technique, called Sandyroid, was developed that generates angle of repose-limited bodies subject to certain simplifying constraints. The resulting shapes are compared with observations of some small bodies in the solar system.

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