TreePM: A Code for Cosmological N-Body Simulations

Journal of astrophysics and astronomy

J. S. Bagla1¹ 

[1] Harish-Chandra Research Institute, Chhatnag Road, Jhunsi, Allahabad 211 019, India.$$

关键词: Gravitation;    methods: numerical;    cosmology: large scale structure of the universe.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

We describe the TreePM method for carrying out large N-Body simulations to study formation and evolution of the large scale structure in the Universe. This method is a combination of Barnes and Hut tree code and Particle-Mesh code. It combines the automatic inclusion of periodic boundary conditions of PM simulations with the high resolution of tree codes. This is done by splitting the gravitational force into a short range and a long range component. We describe the splitting of force between these two parts.We outline the key differences between TreePM and some other N-Body methods.

【 授权许可】

Unknown