Kerr Spherical Photon Orbits
Interactive tool for visualizing spherical/circular photon orbits in Kerr
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Convergence of post-Newtonian for quasi-circular non-precessing comparable mass ratios BBHs
Post-Newtonian (PN) theory provides the analytic foundation for modeling the early inspiral of binary black holes. However, as an asymptotic series, succ...
Merger remnant and eccentricity dynamics surrogates for eccentric nonspinning black hole binaries
Accurate models of merger remnants are increasingly important for gravitational-wave science, including precision tests of gravity with ringdown, inferen...
Notes: Near-identity transformations to split fast and slow motion
The name near-identity transformation (NIT) is just shorthand for a specific application of perturbation theory—one which is particularly useful in dynamical...
Fixing the center-of-mass frame of numerical relativity waveforms using the post-Newtonian center-of-mass charge
The Bondi–van der Burg–Metzner–Sachs (BMS) frame of gravitational waves produced by numerical relativity (NR) simulations is crucial for building accurat...
Chaos and fractals of the black hole photon ring
The photon ring of a Kerr black hole decomposes into a self-similar hierarchy of subrings. Here, we show that this self-similar structure persists in pha...