Dynamics of Apparent and Event Horizons
Peter Anninos, David Bernstein, Steven Brandt, Joseph Libson, Joan, Masso, Edward Seidel, Larry Smarr, Wai-Mo Suen, Paul Walker
TL;DR
This paper introduces a new method for locating black hole horizons and demonstrates that both apparent and event horizons oscillate with quasinormal frequencies across various dynamical black hole scenarios.
Contribution
A novel, efficient technique for identifying event horizons in numerical relativity and analysis of horizon oscillations in diverse black hole spacetimes.
Findings
Event and apparent horizons oscillate with quasinormal frequencies.
The new method enables detailed study of horizon dynamics.
Oscillations observed in all studied dynamical black hole spacetimes.
Abstract
The dynamics of apparent and event horizons of various black hole spacetimes, including those containing distorted, rotating and colliding black holes, are studied. We have developed a powerful and efficient new method for locating the event horizon, making possible the study of both types of horizons in numerical relativity. We show that both the event and apparent horizons, in all dynamical black hole spacetimes studied, oscillate with the quasinormal frequency.
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