[M-GI33] Computational sciences on the universe, galaxies, stars, planets, and their environments

[MGI33-10] The effect of proto-Earth’s rotation on the results of the giant impact simulations

*Natsuki Hosono^1,2,3, Eiichiro Kokubo⁴ (1.Department of Planetology, Graduate School of Science, Kobe University, 2.RIKEN Center for Computational Science, 3.Japan Agency for Marine-Earth Science and Technology, 4.National Astronomical Observatory of Japan)

Keywords:Earth, Moon

The Giant Impact (GI) hypothesis is a collision between two proto-planets, which is originally suggested as the origin of the Moon.
To date, a lot of numerical simulations have been performed by Smoothed Particle Hydrodynamics (SPH) method and concluded that it can form the Moon.
However, such prior works ignored the rotation of the proto-Earth.
Recently, it is pointed out that the proto-Earth can have rapid rotation through the formation process.
Hence, it is natural to consider the effect of rotation.
In this work, we surveyed the impact of the rotation of the proto-Earth on the results of the GI simulations.
As a scheme, we employed the improved SPH, viz., Density Independent SPH.
We used the M-ANEOS for the equation of state.
We used the Japanese supercomputer Fugaku as an architecture.
We will report the results of our GI simulations.