226 citations · 724 across the 28 of their papers we have counts for
19 papers · 1 filter
Chaos and fractals of the black hole photon ring
Roman Berens, Peter Galison, Trevor Gravely +2
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 phase space. Moreover, near th…
Black Hole Vision: An Interactive iOS Application for Visualizing Black Holes
Roman Berens, Dominic O. Chang, Trevor Gravely +1
The Black Hole Explorer (BHEX) is a proposed mission to launch a sub-millimeter radio telescope into Earth orbit that will take the sharpest images in the history of astronomy and…
Resonances in binary extreme mass ratio inspirals
João S. Santos, Vitor Cardoso, Alexandru Lupsasca +2
Stellar-mass binaries evolving in the vicinity of supermassive black holes (SMBHs) may be common in the universe, either in active galactic nuclei or in other astrophysical environ…
Generalized Couch--Torrence inversions
Panagiotis Charalambous, Laura Donnay, Alexandru Lupsasca
The Laplace equation on Euclidean flat space admits a discrete radial inversion symmetry. In 1983, Couch and Torrence (CT) found -- surprisingly -- that the massless wave equation…
Gravitational Waves on Kerr Black Holes II: Metric Reconstruction with Cosmological Constant
Roman Berens, Trevor Gravely, Alexandru Lupsasca
In this second paper of our series started with \cite{Berens2024}, we investigate linearized gravitational perturbations of a rotating Kerr black hole in a non-asymptotically flat…
Why there is no Love in black holes
Alexandru Lupsasca
This paper presents a new conformal symmetry of stationary, axisymmetric Kerr perturbations. This symmetry is exact but non-geometric (or "hidden"), and each of its generators has…