FastEMRIWaveforms
PythonFast, accurate EMRI waveforms on both CPUs and GPUs
pip install fastemriwaveforms
Black hole perturbation theory
Open tools for modelling gravitational waves
A community-built suite of software and data for black hole perturbation theory, self-force, waveforms and ringdown.
$ pip install fastemriwaveforms
# Mathematica · PacletInstall["Teukolsky"]
Explore by physics
Find a tool by the problem you're solving, not the language it's written in. Every package installs independently.
Geodesics & orbits
Bound and plunging trajectories in Kerr and Schwarzschild.
Spheroidal harmonics
Spin-weighted spheroidal harmonics and eigenvalues.
Perturbation equations
Teukolsky, Regge-Wheeler and the Einstein equations.
Quasinormal modes
Ringdown frequencies and mode mixing.
Self-force & inspirals
Metric perturbations, punctures and inspiral evolution.
Waveforms & EMRI
Fast, accurate waveforms for LISA sources.
Tensor algebra
Coordinate-based tensor calculations for GR.
Data repositories
Fluxes, regularisation parameters and PN series.
Why a Toolkit?
For decades, black hole perturbation theory codes were scattered across individual groups and rewritten from scratch. The Toolkit gathers the core elements so researchers spend less time writing code and more time doing physics.
View the source on GitHubUsed across the field
The Toolkit is cited and extended in hundreds of papers and underpins waveform models for LISA. The community spans dozens of institutions worldwide.
See the publications