Energetics of the Kerr-Newman black hole by the penrose process

@article{Bhat1985EnergeticsOT,
  title={Energetics of the Kerr-Newman black hole by the penrose process},
  author={M Bhat and Sanjeev V. Dhurandhar and Naresh Dadhich},
  journal={Journal of Astrophysics and Astronomy},
  year={1985},
  volume={6},
  pages={85-100}
}
We have studied in detail the energetics of Kerr-Newman black hole by the Penrose process using charged particles. It turns out that the presence of electromagnetic field offers very favourable conditions for energy extraction by allowing for a region with enlarged negative energy states much beyondr = 2M, and higher negative values for energy. However, when uncharged particles are involved, the efficiency of the process (defined as the gain in energy/input energy) gets reduced by the presence… 
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References

SHOWING 1-10 OF 17 REFERENCES
Revival of the Penrose process for astrophysical applications
By utilizing the curious existence of negative energy orbits outside the event horizon of the Kerr black hole, Penrose proposed that rotational energy of the black hole can be extracted. It was
Global structure of the Kerr family of gravitational fields
The Kerr family of solutions of the Einstein and Einstein-Maxwell equations is the most general class of solutions known at present which could represent the field of a rotating neutral or
Accretion Discs in Astrophysics
If we put a particle in a circular orbit around a central gravitating body, it will stay in that orbit. If we then extract energy and angular momentum from the particle we may allow it to spiral
Runaway instability in accretion disks orbiting black holes
The runaway instability (very fast, ‘catastrophic’, mass exchange) operates in close binaries when the more massive star overflows its Roche lobe1,2. The Roche lobe radius shrinks due to the mass
Ion-supported tori and the origin of radio jets
While apparently supplying tremendous power to their extended radio-emitting regions, the nuclei of most radio galaxies emit little detectable radiation. It is proposed that at the centre of each is
On the energetics of Reissner Nordstrøm geometries
Generalization of the ''Schwarzschild surface'' to arbitrary static and stationary metrics.
A generalization of the r = 2m ``Schwarzschild surface'' is defined for static metrics which are not necessarily spherically symmetric. This surface exhibits simultaneously the properties of being a
Reversible and Irreversible Transformations in Black-Hole Physics
The concepts of irreducible mass and of reversible and irreversible transformations in black holes are introduced, leading to the formula
The Nuclei of Galaxies
Galactic nuclei activity effect on galactic evolution and cosmology, discussing stellar and gaseous components
...
1
2
...