Collisional Penrose Process in Rotating Wormhole Spacetime

Abstract

In a collisional Penrose process, two particles coming from the asymptotically flat region collide in the ergosphere of a compact object. The collision produces two new particles, one with positive energy and one with negative energy. When the particle with positive energy escapes to infinity, the process extracts energy from the compact object. In this paper, we study the collisional Penrose process in a rotating wormhole spacetime. We consider the simple case of a head-on collision at the throat of a Teo wormhole. We find that the process of energy extraction from a Teo wormhole can be substantially more efficient than the collisional Penrose process in the Kerr black hole spacetime.

8 pages, 2 figures. v2: corrected a few typos

References in corpus (21)

• Gravitational Lensing by Wormholes
• Can we distinguish between black holes and wormholes by their Einstein-ring systems?
• Thin accretion disks in stationary axisymmetric wormhole spacetimes
• Instability of wormholes supported by a ghost scalar field. I. Linear stability analysis
• Deflection angle of light in an Ellis wormhole geometry
• Acceleration of particles by nonrotating charged black holes
• Electromagnetic signatures of thin accretion disks in wormhole geometries
• Collisional Penrose process near the horizon of extreme Kerr black holes
• Instability of wormholes supported by a ghost scalar field. II. Nonlinear evolution
• Revised upper limit to energy extraction from a Kerr black hole
• Acceleration of colliding shells around a black hole: Validity of the test particle approximation in the Banados-Silk-West process
• Broad K$\alpha$ iron line from accretion disks around traversable wormholes
• Rotating Ellis Wormholes in Four Dimensions
• Distinguishing black holes and wormholes with orbiting hot spots
• New analytic models of traversable wormholes
• Wave Effect in Gravitational Lensing by the Ellis Wormhole
• Signed magnification sums for general spherical lenses
• High energy collision of two particles in wormhole spacetimes
• Ultra-high energy particle collisions in a regular spacetime without blackholes or naked singularities
• Super-Penrose collisions are inefficient - a Comment on: Black hole fireworks: ultra-high-energy debris from super-Penrose collisions
• Unbounded energies of debris from head-on particle collisions near black holes