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Testing numerically the null Cauchy horizon singularity inside Kerr black holes
The Cauchy horizon inside a Kerr black hole develops an instability that transforms it into a curvature singularity. Perturbative …
Lior Burko, Gaurav Khanna, Anıl Zenginoĝlu
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Caustic echoes and their astrophysical applications
A source of waves (scalar, electromagnetic, or gravitational) near the event horizon of a black hole leads to the formation of a …
Chad Galley, Anıl Zenginoğlu
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Caustic Echoes as X-ray follow-ups from Sagittarius A
The supermassive black hole Sgr A* at the center of our Galaxy is a source of bright X-ray flares. In certain cases, the bright flares …
Chad Galley, D Tsang, A Zenginoğlu
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Intermediate behavior of Kerr Black Hole tails
The numerical investigation of wave propagation in the asymptotic domain of Kerr spacetime has only recently been possible thanks to …
Anıl Zenginoǧlu, Gaurav Khanna, Lior M Burko
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A physically motivated framework to describe black hole perturbations
Black hole perturbation theory is typically studied on time surfaces that extend between the bifurcation sphere and spatial infinity. I …
Anıl Zenginoğlu
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Numerical calculations near spatial infinity
After describing in short some problems and methods regarding the smoothness of null infinity for isolated systems, I present numerical …
Anıl Zenginoğlu
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Hyperboloidal data and evolution
We discuss the hyperboloidal evolution problem in general relativity from a numerical perspective, and present some new results. …
Sascha Husa, Carsten Schneemann, Tilman Vogel, Anıl Zenginoğlu
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