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This book describes numerical simulations of collisions between
asteroids, based on a unique numerical code developed by the
author. The code accurately solves the elastic dynamic equations
and describes the effects of fracture and friction, which makes it
possible to investigate the shapes of impact outcomes produced by
asteroid collisions and subsequent gravitational accumulation of
fragments. The author parallelizes the code with high
parallelization efficiency; accordingly, it can be used to conduct
high-resolution simulations with the aid of supercomputers and
clarify the shapes of small remnants produced through the
catastrophic destruction of asteroids. The author demonstrates that
flat asteroids can only be produced by impacts involving objects
with similar mass and low velocity, which suggests that the flat
asteroids in our solar system were created in the planet formation
era and have kept their shapes until today. The author also shows
that asteroid collisions under certain conditions can produce the
extremely elongated shape of an interstellar minor body,
1I/'Oumuamua. In brief, the book offers a comprehensive
investigation of asteroid impacts and shapes, making it a uniquely
valuable resource.
This book describes numerical simulations of collisions between
asteroids, based on a unique numerical code developed by the
author. The code accurately solves the elastic dynamic equations
and describes the effects of fracture and friction, which makes it
possible to investigate the shapes of impact outcomes produced by
asteroid collisions and subsequent gravitational accumulation of
fragments. The author parallelizes the code with high
parallelization efficiency; accordingly, it can be used to conduct
high-resolution simulations with the aid of supercomputers and
clarify the shapes of small remnants produced through the
catastrophic destruction of asteroids. The author demonstrates that
flat asteroids can only be produced by impacts involving objects
with similar mass and low velocity, which suggests that the flat
asteroids in our solar system were created in the planet formation
era and have kept their shapes until today. The author also shows
that asteroid collisions under certain conditions can produce the
extremely elongated shape of an interstellar minor body,
1I/'Oumuamua. In brief, the book offers a comprehensive
investigation of asteroid impacts and shapes, making it a uniquely
valuable resource.
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