See also: Back
Dependence on configuration: primary, wide binary, close binary.
| hobson20_primary_8_1.4_5_60__1e5, oblique... | hobson21_widebinary_8_1.4_5_60 | hobson22_closebinary_8_1.4_5_60 | hobson19_pair_10_1.6_5_30__LIN, head-on... | |||
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| SFD | |
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| Slightly undershoot SFD, cf. overshoot w. d = 1.5 km in lightgray, and 1.45 km in darkgray. | Second best fit! Secondary is always present, because it was only damaged on 1 side facing the ejecta -- see the animation, which is a "slice" (1 km wide), showing the interior. Momentum transfer to primary (and also secondary) unbounds the binary. | Secondary was dispersed and only partially reaccumulated into a 1-km body, which was incorpored to the "tail" of the SFD. It's a very different collisional regime than 5-km s^-1 impact, the primary "pushed" the secondary at a low speed, which was neverheless sufficient to deform, damage, and disperse it with relatively low relative velocities... | Best fit! It requires some fine-tuning of impact conditions and "luck", because the primary did not reaccumulate into a single body, but remained as an unbound pair. See gray for a manually edited SFD, with 2 largest fragments merged. | |||
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| fragmentation (1000 s), SPH w. self-gravity, von Mises rheology | |
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| reaccumulation (10^5 s), N-body, merge (v, ω) limit = (4, 1) | |
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