Rainer Spurzem

apl. Prof. at ZAH-ARI, Univ. of Heidelberg
Computational Stellar Dynamics Group in Heidelberg and Beijing, see also ( Silk Road Project ).
Adjunct Professor at Kavli Institute for Astronomy and Astrophysics at Peking University
2014 Alexander von Humboldt Polish Honorary Research Scholarship Laureat of Foundation for Polish Science

ORCID iD iconhttps://orcid.org/0000-0003-2264-7203

Up to Date Publication List by ADS       CV Rainer Spurzem

Teaching

Teeminar Calendar 2022
Introduction to GPU Accelerated Computing
Introduction to Computational Physics (UKWR2)
Dynamics of galaxies, star clusters and planetary systems (MVSem)
Tutorial by Kai Wu* on use of github for Nbody6++GPU ; zoom recording of the session (~100 MB)
* Xi'an Jiatong Liverpool University at Suzhou, China
Training for direct N-body simulations of star clusters (NBODY6++GPU)

Recent Projects in Germany



Code Download Links: NBODY6++GPU-Jan2022-beta (preliminary link)
Paper with Link o github respository (Wang et al. 2015)
Gaseous Model (Giersz & Spurzem 1994)    (Spurzem 1999)

Astronomisches Rechen-Institut , Zentrum für Astronomie der Univ. Heidelberg ,
Mönchhofstrasse 12-14, D-69120 Heidelberg, Germany
Phone: +49-6221-54-1830; Fax: +49-6221-54-1888; Email: spurzem@ari.uni-heidelberg.de
Office Location: Room No. N.E-01, ground floor, main building (Neubau).
Member of Astronomische Gesellschaft , European Astronomical Society , International Astronomical Union

Beijing: National Astronomical Observatories, Chinese Academy of Sciences
A20 Datun Rd., Chaoyang Distr., Beijing 100012, China
Contact: spurzem@nao.cas.cn (Li Shuo) lishuo@nao.cas.cn
Kavli Institute for Astronomy and Astrophysics at Peking University
Main Fields of Research (these link-anchors lead directly to short paragraphs below on this page):
Stellar and Galactic Dynamics , Stellar and Planetary Dynamics , Direct N-Body Simulations , Special Purpose Computing

Participation in SFB881 ``The Milky Way System'', infrastructure project Z2 with GPU accelerated supercomputer.
Virgo-EGO Scientific Forum Ego1 logo

MODEST - Modelling Dense Stellar Systems Internat. Working Group

Stellar and Galactic Dynamics:

Dynamics of (globular) star clusters, galaxies and galactic nuclei; Study of the effects of rotation, mass segregation, primordial binaries and central massive objects on the evolution of dense stellar systems. Using anisotropic gaseous models , direct solutions of the Fokker-Planck equation and Monte Carlo methods to simulate numerically the effects of stellar evolution, a realistic mass spectrum, galactic tidal fields on the evolution of dense young or globular star clusters. Using particle methods ( SPH = Smoothed Particle Hydrodynamics, some SPH-links: St. Andrews , Tübingen ) to study the combined evolution of stellar systems and interstellar matter, e.g. for chemodynamical models of galaxy formation.

  • Mirek Giersz, Nicolaus Copernicus Astronomical Centre, Warsaw , Monte Carlo models of star clusters with binaries
    David Merritt , Andras Szell, RIT - Rochester Inst. of Technology, New York State, USA , Black Holes in Dense Stellar Clusters
  • Hyung Mok Lee and Eunhyeuk Kim, Dept. of Astronomy, Univ. of Seoul, Korea Models of rotating star clusters

    Stellar and Planetary Dynamics:

    Formation of Protoplanets in disks of merging and fragmenting planetesimals, runaway and oligarchic growth, interaction with disks, based on direct N-Body simulation models. The influence of stellar encounters on the evolution of orbital parameters of planetary systems in star clusters. Participation planned in DFG Schwerpunkt ("Focused Research Programme" of German Science Foundation) on "Extrasolar Planets" . Collaborations in this field:

  • Doug Lin , Univ. of California
  • Shigeru Ida , Tokyo Institute of Technology
  • Eiichiro Kokubo , National Astronomical Observatory of Japan
    MPIA Heidelberg Jens Rodmann

    Direct N-Body Simulations:

    Direct N-body Simulations of collisional star clusters (globulars, young dense, around galactic central black holes) using NBODY6++ (a download area here ) - a special variant of NBODY6 (a download area here , direct force integration programme originally written by Sverre Aarseth) for massively parallel supercomputers. Supported platforms include ALiCE at the Univ. Wuppertal (see also the web page of Thomas Lippert for more information), or general supercomputers such as Hitachi SR8000 , IBM RS/6000 SP and CRAY T3E (in memoriam Seymour Cray, new link!), visualization of the results with NEMO. External collaborations in this field with:

  • Sverre Aarseth , Inst. of Astronomy Cambridge
  • Jun Makino , University of Tokyo
  • Douglas Heggie , Dept. of Maths. and Stats. Univ of Edinburgh
  • Paolo Miocchi , Roberto Capuzzo-Dolcetta , La Sapienza Universita di Roma
  • We acknowledge supercomputing time at: HLRS Stuttgart , NIC Jülich , SSC Karlsruhe
  • We acknowledge numerous TRACS research visits supported by the Edinburgh Parallel Computing Centre.
  • Other interesting supercomputer centres: LRZ München , ZIB Berlin , Hochleistungsrechner Nord (HLRN) .

    Special Purpose Computing

    Participation in the development and astrophysical application of special purpose computers, in particular FPGA ) in combination with GRAPE (the GRACE = GRAPE + RACE or ASPH(E)RIC project. This research is in cooperation with Lehrstuhl 5, Technische Informatik at the Univ. Mannheim and the Max Planck Institut für Astronomie in Heidelberg, and a proposal for another SFB-Transregio is in the early planning stage. GRAPE (=GRAvity PipE) are extremely fast special purpose machines to compute direct gravitational forces in N-body simulations. They have been invented and designed at Dept. of Astronomy and Dept. of Earth Science and Astronomy of the College of Arts and Sciences of the University of Tokyo ; nowadays GRAPE development is located at Hongo Campus and Komaba Campus of the University of Tokyo . The collaborators in this project are:

  • Gerhard Lienhart , Andreas Kugel , Reiner Männer , Univ. Mannheim
    Markus Wetzstein, Andi Burkert , Univ. Observatory Munich
  • Jun Makino , Toshiyuki Fukushige , University of Tokyo


    Comments or Problems:

    For information please email to spurzem@ari.uni-heidelberg.de , phone +49-6221-54-1830 , or FAX your request to +49-6221-54-1888. If you have problems or comments concerning our WWW service, please send e-mail to the following address: webmaster@ari.uni-heidelberg.de

    Last update of this page: February 2022