Observing braneworld black holes
Ruth Gregory, Richard Whisker, Kris Beckwith, Chris Done
TL;DR
This paper investigates how braneworld gravity theories modify black hole near-horizon physics and proposes a method to analyze these effects using observational bounds on accretion disc dynamics.
Contribution
It introduces a novel approach to derive the general behavior of unknown braneworld black hole solutions near the horizon.
Findings
Constraints on braneworld black hole solutions near the horizon
Potential observational signatures of braneworld gravity effects
Framework for testing gravity theories with accretion disc observations
Abstract
Spacetime in the vicinity of an event horizon can be probed using observations which explore the dynamics of the accretion disc. Many high energy theories of gravity lead to modifications of the near horizon regime, potentially providing a testing ground for these theories. In this paper, we explore the impact of braneworld gravity on this region by formulating a method of deriving the general behaviour of the as yet unknown braneworld black hole solution. We use simple bounds to constrain the solution close to the horizon.
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