Notes: Generalized harmonic form of Einstein’s equations from a gauge-fixed action
The generalized harmonic formulation can be derived by adding a gauge-fixing term to the Einstein-Hilbert action
The generalized harmonic formulation can be derived by adding a gauge-fixing term to the Einstein-Hilbert action
Interactive toy for understanding Poincaré sections and chaos
The dividing line between bound and plunging orbits is an algebraic variety
qnm is an open-source Python package for computing the Kerr quasinormal mode frequencies, angular separation constants, and spherical-spheroidal mixing coeff...
Hear me, Katie Bouman, and friends talk about how to snap a picture of a black hole with the Event Horizon Telescope!