Authors:
- Nominated as an outstanding Ph.D. thesis by the Nagoya University, Japan
- Summarizes SPH techniques required for simulations of solid body impacts, helping readers to develop simulation codes using the SPH method
- Comprehensively investigates asteroid impacts and quantitatively clarifies shapes of asteroids formed by various impacts
- Proposes a collisional history of large asteroids, i.e., that large and flat asteroids were created in the planet formation era, and have kept their shapes until today
Part of the book series: Springer Theses (Springer Theses)
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Table of contents (6 chapters)
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Front Matter
About this book
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.
Keywords
- Numerical Simulations of Asteroid Collisions
- Asteroid Shapes Formed Through Collisions
- High-resolution Simulations of Catastrophic Destruction
- Smoothed Particle Hydrodynamics
- SPH Method for Elastic Dynamics
- Suppress Tensile Instability with Godunov SPH Method
- Collision Physics of Rocky/Granular Bodies
- Formation Era of Asteroid Shapes
- Collisional Formation of 1i/ʻoumuamua
- Planetary System Formation
- theoretical astrophysics
Authors and Affiliations
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Earth-Life Science Institute, Tokyo Institute of Technology, Meguro, Japan
Keisuke Sugiura
About the author
Dr. Keisuke Sugiura is a postdoctoral researcher at Earth-Life Science Institute, Tokyo Institute of Technology. His work mainly involves planetary system formation, especially collision physics of minor bodies. He recieved his Bachelor of Science from Nagoya University in 2014, and his Master and Doctor of Science from the Department of Physics, Nagoya University in 2016 and 2019, respectively. In March 2016, he was awarded the 2015 Dean Prize by the Graduate School of Science, Nagoya University.
Bibliographic Information
Book Title: Development of a Numerical Simulation Method for Rocky Body Impacts and Theoretical Analysis of Asteroidal Shapes
Authors: Keisuke Sugiura
Series Title: Springer Theses
DOI: https://doi.org/10.1007/978-981-15-3722-6
Publisher: Springer Singapore
eBook Packages: Physics and Astronomy, Physics and Astronomy (R0)
Copyright Information: The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2020
Hardcover ISBN: 978-981-15-3721-9Published: 18 March 2020
Softcover ISBN: 978-981-15-3724-0Published: 18 March 2021
eBook ISBN: 978-981-15-3722-6Published: 17 March 2020
Series ISSN: 2190-5053
Series E-ISSN: 2190-5061
Edition Number: 1
Number of Pages: XIII, 134
Number of Illustrations: 2 b/w illustrations, 55 illustrations in colour
Topics: Planetary Sciences, Theoretical Astrophysics, Numerical and Computational Physics, Simulation