5 papers
Self-consistent -body simulation of Planetesimal-Driven Migration. II. The effect of PDM on planet formation from a planetesimal disk
Tenri Jinno, Takayuki R. Saitoh, Yoko Funato +1
According to the canonical planet formation theory, planets form "in-situ" within a planetesimal disk via runaway and oligarchic growth. This theory, however, cannot naturally acco…
The First Star-by-star -body/Hydrodynamics Simulation of Our Galaxy Coupling with a Surrogate Model
Keiya Hirashima, Michiko S. Fujii, Takayuki R. Saitoh +9
A major goal of computational astrophysics is to simulate the Milky Way Galaxy with sufficient resolution down to individual stars. However, the scaling fails due to some small-sca…
A new approach for predicting the stability of hierarchical triple systems -- I. Coplanar Cases
Ryutaro Iwakura, Yoko Funato, Junichiro Makino
Hierarchical triple systems play a crucial role in various astrophysical contexts, and therefore the understanding of their stability is important. Traditional empirical stability…
ASURA-FDPS-ML: Star-by-star Galaxy Simulations Accelerated by Surrogate Modeling for Supernova Feedback
Keiya Hirashima, Kana Moriwaki, Michiko S. Fujii +5
We introduce new high-resolution galaxy simulations accelerated by a surrogate model that reduces the computation cost by approximately 75 percent. Massive stars with a Zero Age Ma…
Self-consistent -body simulation of Planetesimal-Driven Migration I. The trajectories of single planets in the uniform background
Tenri Jinno, Takayuki R. Saitoh, Yoko Funato +1
Recent exoplanet observations have revealed a diversity of exoplanetary systems, which suggests the ubiquity of radial planetary migration. One powerful known mechanism of planetar…