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- California Institute of TechnologyUS4 papers
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4 papers · 1 filter
Nearly extremal apparent horizons in simulations of merging black holes
Geoffrey Lovelace, Mark A. Scheel, Robert Owen +9
The spin angular momentum of an isolated Kerr black hole is bounded by the surface area of its apparent horizon: , with equality for extremal black holes. In thi…
The Quasinormal Modes of Weakly Charged Kerr-Newman Spacetimes
Zachary Mark, Huan Yang, Aaron Zimmerman +1
The resonant mode spectrum of the Kerr-Newman spacetime is presently unknown. These modes, called the quasinormal modes, play a central role in determining the stability of Kerr-Ne…
Quasinormal Modes Beyond Kerr
Aaron Zimmerman, Huan Yang, Zachary Mark +2
The quasinormal modes (QNMs) of a black hole spacetime are the free, decaying oscillations of the spacetime, and are well understood in the case of Kerr black holes. We discuss a m…
Visualizing Spacetime Curvature via Frame-Drag Vortexes and Tidal Tendexes II. Stationary Black Holes
Fan Zhang, Aaron Zimmerman, David A. Nichols +5
When one splits spacetime into space plus time, the Weyl curvature tensor (which equals the Riemann tensor in vacuum) splits into two spatial, symmetric, traceless tensors: the tid…