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written by Wolfgang Christian, Mario Belloni, and Anne Cox
The GR Kerr Stone program simulates orbits of an object in the equatorial plane near a rotating black hole using the Kerr metric.  It is distributed as a ready-to-run (compiled) Java archive.  Double clicking the gr_kerr_stone.jar file will run the program if Java is installed. The default is an object initially with an r value of 3.0 near a black hole with angular momentum parameter, J/M = 0.75.

GR Kerr Stone is part of a suite of Open Source Physics programs that model aspects of General Relativity.  Other programs provide additional visualizations.  They can be found by searching ComPADRE for Open Source Physics, OSP, or General Relativity.

Please note that this resource requires at least version 1.5 of Java.
View the supplemental documents attached to this resource (2)
  • GR Kerr Stone Documentation
    A pdf document that briefly describes the GR Kerr Stone program. It describes how to use the gr_kerr_stone.jar file and contains short tutorial exercises and for use with the gr_kerr_stone.jar file.
  • GR Kerr Stone Distribution
    The materials distributed in this zip file are in support of the GR Kerr Stone program. This distribution contains the GR Kerr Stone program, documentation and exercises.
Subjects Levels Resource Types
- Fundamentals
= Relativity
- General Relativity
- Lower Undergraduate
- Upper Undergraduate
- Graduate/Professional
- Instructional Material
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- Educators
- application/java
  • Currently 0.0/5

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Access Rights: Free access
License: This material is released under a GNU General Public License Version 3 license. Additional information is available.
Rights Holder: Wolfgang Christian
PACSs: 01.50.hv
Keywords: black-hole, open source physics, osp, spinning black-hole
Record Cloner: Metadata instance created May 1, 2009 by Anne Cox
Record Updated: Aug 22, 2009 by Gregory Comer
Last Update
when Cataloged:
May 1, 2009
Other Collections:
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
W. Christian, M. Belloni, and A. Cox, Computer Program GR KERR STONE PROGRAM (2009), WWW Document, (
W. Christian, M. Belloni, and A. Cox, Computer Program GR KERR STONE PROGRAM (2009), <>.
APA Format
Christian, W., Belloni, M., & Cox, A. (2009). GR Kerr Stone Program [Computer software]. Retrieved October 21, 2017, from
Chicago Format
Christian, W, M. Belloni, and A. Cox. "GR Kerr Stone Program." (accessed 21 October 2017).
MLA Format
Christian, Wolfgang, Mario Belloni, and Anne Cox. GR Kerr Stone Program. Computer software. 2009. Java 1.5. 21 Oct. 2017 <>.
BibTeX Export Format
@misc{ Author = "Wolfgang Christian and Mario Belloni and Anne Cox", Title = {GR Kerr Stone Program}, Month = {May}, Year = {2009} }
Refer Export Format

%A Wolfgang Christian
%A Mario Belloni
%A Anne Cox
%T GR Kerr Stone Program
%D May 1, 2009
%O application/java

EndNote Export Format

%0 Computer Program
%A Christian, Wolfgang
%A Belloni, Mario
%A Cox, Anne
%D May 1, 2009
%T GR Kerr Stone Program
%8 May 1, 2009

Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.

Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Electronic References.

The Chicago Style presented is based on information from Examples of Chicago-Style Documentation.

The MLA Style presented is based on information from the MLA FAQ.

GR Kerr Stone Program:

Is Part Of General Relativity (GR) Package

The General Relativity (GR) Package contains curricular materials for the teaching of general relativity using the GR Kerr Stone Program.

relation by Anne Cox

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