Interactive tool for visualizing spherical/circular photon orbits in Kerr
Gravity theories beyond general relativity (GR) can change the properties of gravitational waves: their polarizations, dispersion, speed, and, importantly, e...
Black hole scalar charge from a topological horizon integral in Einstein-dilaton-Gauss-Bonnet gravity
In theories of gravity that include a scalar field, a compact object’s scalar charge is a crucial quantity since it controls dipole radiation, which can be s...
Integrability conditions when trying to solve for a conformal factor
Modeling black holes’ kicks directly from numerical relativity
Finding the shape of extremal black holes in beyond-GR theories