146 citations · 313 across the 13 of their papers we have counts for
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Bounds for Lyapunov exponent of circular light orbits in black holes
Emanuel Gallo, Thomas Mädler
Chaotic systems near black holes satisfy a universal bound, linking the Lyapunov coefficient associated with unstable orbits to surface gravity of the event h…
Apparent horizon tracking in supercritical solutions of the Einstein-scalar field equations in spherical symmetry in affine-null coordinates
Thomas Mädler, Olaf Baake, Hamideh Hosseini +1
Choptuik's critical phenomena in general relativity is revisited in the affine-null metric formulation of Einstein's equations for a massless scalar field in spherical symmetry. Nu…
Slowly rotating Kerr metric derived from the Einstein equations in affine-null coordinates
Thomas Mädler, Emanuel Gallo
Using a quasi-spherical approximation of an affine-null metric adapted to an asymptotic Bondi inertial frame, we present high order approximations of the metric functions in terms…
Shadows of rotating black holes in plasma environments with aberration effects
Gastón Briozzo, Emanuel Gallo, Thomas Mädler
The shadows of black holes encode significant information about the properties of black holes and the spacetime surrounding them. So far, the effects of dispersive media, such as p…
Spherically symmetric black holes and affine-null metric formulation of Einstein's equations
Emanuel Gallo, Carlos Kozameh, Thomas Mädler +2
The definition of well-behaved coordinate charts for black hole spacetimes can be tricky, as they can lead for example to either unphysical coordinate singularities in the metric (…
Editorial Note to: On the Newtonian Limit of Einstein's Theory of Gravitation (by Jürgen Ehlers)
Thomas Buchert, Thomas Mädler
We give an overview of literature related to Jürgen Ehlers' pioneering 1981 paper on Frame theory--a theoretical framework for the unification of General Relativity and the equatio…
Kerr Black Holes and Nonlinear Radiation Memory
Thomas Mädler, Jeffrey Winicour
The Minkowski background intrinsic to the Kerr-Schild version of the Kerr metric provides a definition of a boosted spinning black hole. There are two Kerr-Schild versions correspo…
Boosted Schwarzschild Metrics from a Kerr-Schild Perspective
Thomas Mädler, Jeffrey Winicour
The Kerr-Schild version of the Schwarzschild metric contains a Minkowski background which provides a definition of a boosted black hole. There are two Kerr-Schild versions correspo…
Radiation Memory, Boosted Schwarzschild Spacetimes and Supertranslations
Thomas Mädler, Jeffrey Winicour
We investigate gravitational radiation memory and its corresponding effect on the asymptotic symmetries of a body whose exterior is a boosted Schwarzschild spacetime. First, in the…
Bondi-Sachs Formalism
Thomas Mädler, Jeffrey Winicour
The Bondi-Sachs formalism of General Relativity is a metric-based treatment of the Einstein equations in which the coordinates are adapted to the null geodesics of the spacetime. I…
The sky pattern of the linearized gravitational memory effect
Thomas Mädler, Jeffrey Winicour
The gravitational memory effect leads to a net displacement in the relative positions of test particles. This memory is related to the change in the strain of the gravitational rad…