A team of researchers has presented a new model for the origin of Saturn’s rings based on results of computer simulations. The results of the simulations are also applicable to rings of other giant planets and explain the compositional differences between the rings of Saturn and Uranus. The findings were published on October 6 in the online version of Icarus.
The lead author of the paper is HYODO Ryuki (Kobe University, Graduate School of Science), and co-authors are Professor Sébastien Charnoz (Institut de Physique du Globe/Université Paris Diderot), Professor OHTSUKI Keiji (Kobe University, Graduate School of Science), and Project Associate Professor GENDA Hidenori (Earth-Life Science Institute, Tokyo Institute of Technology).
Please visit "Press Release from Kobe University (Oct 31, 2016): Mystery solved behind birth of Saturn’s rings" for details of this research.
Title: Ring formation around giant planets by tidal disruption of a single passing large Kuiper belt object
Authors: Ryuki Hyodo, Sébastien Charnoz, Keiji Ohtsuki, Hidenori Genda
GRAPE-DR, one of the GRAPE (GRAvity PipE) series, was used in this research. GRAPE is a special-purpose supercomputer operated by CfCA/NAOJ and enables a high-speed computation of gravitational interactions between particles. The peak performances of GRAPE-DR are 1.6 Tflops in single precision and 0.8 Tflops in double precision. In addition to its high performance, GRAPE-DR has superior ability in power efficiency. In June 2010, a GRAPE-DR system developed by NAOJ and the University of Tokyo got a first prize in the Little Green500 list.
- Department of Planetology, Graduate School of Science / Faculty of Science, Kobe University
- Tokyo Institute of Technology / Earth-Life Science Institute
- Institut de Physique du Globe de Paris
- Université Paris Diderot