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- W2014709651 abstract "A relatively simple prescription for estimating the number of debris clumps n that form after a catastrophic tidal disruption event is presented. Following the breakup event, it is assumed that the individual debris particles follow keplerian orbits about the planet until the debris' gravitational contraction timescale tc becomes shorter than its orbital spreading timescale ts. When the two timescales become comparable, self-gravity breaks up the debris train into n ∼ LD clumps, which is the debris length/diameter ratio at that instant. The clumps subsequently orbit the planet independent of each other. The predicted number of clumps n is in good agreement with more sophisticated N-body treatments of tidal breakup for parabolic encounters, and the dependence of n upon the progenitor's density as well as its orbit is also mapped out for hyperbolic encounters. These findings may be used to further constrain both the orbits and densities of the tidally disrupted bodies that struck Callisto and Ganymede. A cursory analysis shows that the Gomul and Gipul crater chains on Callisto, which have the greatest number of craters among the known chains, were formed by projectiles having comet-like densities estimated at ϱ0 ≲ 1 gm/cm3." @default.
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- W2014709651 date "1998-11-01" @default.
- W2014709651 modified "2023-10-09" @default.
- W2014709651 title "Tidal disruption of strengthless rubble piles—a dimensional analysis" @default.
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- W2014709651 doi "https://doi.org/10.1016/s0032-0633(98)00055-5" @default.
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