Published May 15, 2026 | Version 5.0.0
Software Open

hannorein/rebound: 5.0.0

Authors/Creators

  • 1. University of Toronto
  • 2. Harvey Mudd College
  • 3. Rice University
  • 4. @ngcm
  • 5. Bloomberg
  • 6. Xanadu Quantum Technologies Inc.
  • 7. University of Nevada, Las Vegas
  • 8. Skylon Dynamics
  • 9. Universiteit van Amsterdam
  • 10. Google
  • 11. @WolframInstitute
  • 12. Toku
  • 13. Self-employed
  • 14. University of Colorado Boulder
  • 15. @Send-Dots
  • 16. @spacetelescope
  • 17. @Grass-Development-Team
  • 18. Scotiabank
  • 19. Fermilab
  • 20. @conan-io

Description

  • This release incorporates major updates and breaks backwards compatability.
  • Particles can now be identified with a name. The names can be any string. The memory for names is managed by REBOUND. Names are automatically stored in Simulationarchives. Hashes are now longer available to identify particles.
  • A new interface for integrators has beed added. Thanks to this all the functionality provided by an integrator are implemented in the integrator's C file. This also makes it much easier to experiment with new integrators. To set an integrator from C, you now need to use a function and pass it a string: reb_simulation_set_integrator(r, "ias15"). The syntax from python remains the same to set the integrator. Integrator attributes can now be set in python without the ri_* structs, e.g. sim.integrator.safe_mode = 1 now works for WHFast.
  • Python bindings are automatically generated for both built-in and custom imtegrators. This includes documentation strings (__doc__) and support for setting enumeration values with a string.
  • The python structures Simulation and Particle only allow setting attributes that correspond to fields in the C structures. This makes it much easier to find bugs where previously a typo in an assignment failed silently.
  • The file format for the Simulationarchive has been changed. Note that you can not read Simulationsarchives that were saved with a previous version.
  • The reb_simulation_add_fmt() function now allows for angles to be initialized with a uniform distribution. The synatx is reb_simulation_add_fmt(r, "a e uniform(omega)", 1.0, 0.1).
  • The particle array is now kept sorted by default. The user doesn't need to manually specify that the particles should be kept sorted when a particle gets removed.
  • The tree structure is now regenerated from scratch at every timestep instead of updating a previously generated tree. This simplifies the logic significantly does not negatively affect the runtime.
  • Python installs from source are faster.
  • Many other small bug fixes and improvements.

Version 4.x

Files

hannorein/rebound-5.0.0.zip

Files (6.3 MB)

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Additional details

Related works

Is supplement to
Software: https://github.com/hannorein/rebound/tree/5.0.0 (URL)

Software

Repository URL
https://github.com/hannorein/rebound