期刊
ICARUS
卷 317, 期 -, 页码 215-228出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.icarus.2018.08.006
关键词
Asteroids; Collisions; Collisional physics
资金
- Swiss National Centre of Competence in Research PlanetS
- French space agency CNES
- NASA - Solar System Workings program [NNX15AH90G]
- NASA [NNX15AH90G, 805254] Funding Source: Federal RePORTER
Understanding the collisional fragmentation and subsequent reaccumulation of fragments is crucial for studies of the formation and evolution of the small-body populations. Using an SPH / N-body approach, we investigate the size-frequency distributions (SFDs) resulting from the disruption of 100 km-diameter targets consisting of porous material, including the effects of pore-crushing as well as friction. Overall, the porous targets have a significantly higher impact strength () than the rubble-pile parent bodies investigated previously (Benavidez et al., 2012) and show a behavior more similar to non-porous monolithic targets (Durda et al., 2007). Our results also confirm that for a given specific impact energy, the SFDs resulting from a parent body disruption are strongly dependent on the size scale.
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