Stephen R. Green

Stephen R. Green

Postdoctoral Researcher

Max Planck Institute for Gravitational Physics, Potsdam


I am a postdoctoral researcher in gravitational waves at the Albert Einstein Institute in Potsdam. My current research interests are in black hole perturbation theory and deep-learning methods for data analysis.

I grew up in Toronto, Canada, where I attended the University of Toronto. I obtained my PhD in physics at the University of Chicago under Robert Wald, where I studied effects of general relativity in cosmology and debunked the idea that small scale structure could drive cosmological acceleration and mimic dark energy. I then moved to the University of Guelph and Perimeter Institute, where I studied turbulence in gravitational waves and black hole superradiant instabilities. Now I am a member of LIGO, and my work focuses on gravitational waves.


  • Gravitational Waves
  • Black Holes
  • Deep Learning


  • PhD in Physics, 2012

    University of Chicago

  • SM in Physical Sciences, 2006

    University of Chicago

  • BSc in Mathematics and Physics, 2005

    University of Toronto



Postdoc / Junior Scientist

Max Planck Institute for Gravitational Physics

Sep 2017 – Present Potsdam, Germany

Postdoctoral Fellow

Perimeter Institute for Theoretical Physics

Sep 2014 – Aug 2017 Waterloo, Canada

CITA National Postdoctoral Fellow

University of Guelph

Sep 2012 – Aug 2014 Guelph, Canada


Deep Learning for Compact Binaries

Use normalizing flows for Bayesian inference of system parameters from gravitational-wave detector data.

Black Hole Perturbation Theory

Develop new methods for nonlinear perturbations of the Kerr spacetime and make predictions for extreme mass-ratio inspirals for LISA.

Superradiant Instability

When can fields extract mass from black holes and drive instabilities? What is the endpoint?

Spacetime Turbulence

What happens when gravitational waves are confined by spacetime geometry so that nonlinear interactions take hold? What is the end point of the AdS instability?

Averaging in Cosmology

Can cumulative relativistic effects of small scale structure mimic Dark Energy?