Demo Little Green Machine II

Name: Prof.dr. Simon Portegies Zwart
Affiliation: Sterrenwacht Leiden, Leiden University

Bio
Simon Portegies Zwart is professor of computational astrophysics at the Sterrewacht Leiden in the Netherlands. His principal scientific interests are high-performance computational astrophysics. This includes parallel algorithms and numerical integration techniques, but also multi-scale and multi-physics modelling, the evolution of hierarchical stellar and planetary systems, and the ecology of dense star clusters. He is editor in chief of the open access journal
"Computational Astrophysics and Cosmology" and visiting researcher of the Particle Simulator Team at RIKEN.  In his free time, he brews beer and translates Egyptian hieroglyphs.

Title of talk
The collision between the Andromeda and Milky Way galaxies

Abstract
We will demonstrate how two galaxies interact and collide using the  Little Green Machine running the Bonsai gravitational treecode. This interaction can only be solved by integrating the equations of motion of a large number of stars to sufficiently high precision. With the Little green Machine we can perform such simulations in Leiden, rather than that we have to go to a foreign supercomputer.