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Orbital resonances around black holes
Jeandrew Brink1,2, Marisa Geyer3,4, Tanja Hinderer5
1National Institute for Theoretical Physics (NITheP), Bag X1 Matieland, Stellenbosch 7602, South Africa.
Physical Review Letters
|March 14, 2015
Summary
We calculated the resonance scales for orbits around Kerr black holes. These findings are crucial for understanding black hole observations with the Event Horizon Telescope and gravitational wave detectors.
Area of Science:
- Astrophysics
- General Relativity
- Black Hole Physics
Background:
- Kerr black holes exhibit complex orbital dynamics.
- Resonant orbits can significantly influence observable phenomena.
Purpose of the Study:
- To compute the length and time scales of resonant orbits around Kerr black holes.
- To provide a theoretical framework for identifying resonance-induced effects in astrophysical observations.
Main Methods:
- Analytical calculations of orbital parameters.
- Exploration of all orbital and spin parameters for Kerr black holes.
Main Results:
- Quantified the length and time scales associated with resonant orbits.
- Identified specific conditions for observable resonance effects.
Conclusions:
- Resonance scales are critical for interpreting data from the Event Horizon Telescope and gravitational wave detectors.
- The study provides locations for the onset of geodesic chaos in non-Kerr spacetimes.
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