Pattern of Impact-induced Ejecta from Granular Targets with Large Inclusions
Abstract
We performed impact experiments to observe patterns in an ejecta curtain with targets consisting of small sand particles and large inclusions comparable to or smaller than the size of the projectiles. The spatial intensity distributions in the ejecta at early stages of crater formation depend on the size of the inclusions. Our numerical simulations of radially spreading particles with different sizes support this result. Based on the results, we proposed a procedure for evaluating the subsurface structures of celestial bodies from the images of ejecta curtains obtained from space-impact experiments.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- August 2019
- DOI:
- 10.3847/2041-8213/ab303f
- arXiv:
- arXiv:1907.04995
- Bibcode:
- 2019ApJ...880L..30K
- Keywords:
-
- minor planets;
- asteroids: individual: Ryugu;
- planets and satellites: surfaces;
- Astrophysics - Earth and Planetary Astrophysics
- E-Print:
- 16 pages and 3 figures, accepted for publication in The Astrophysical Journal Letters