Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983gregr..15..195u&link_type=abstract
General Relativity and Gravitation, vol. 15, Mar. 1983, p. 195-199. Research supported by the Natural Sciences and Engineering
Astronomy and Astrophysics
Astronomy
5
Black Holes (Astronomy), Particle Acceleration, Particle Density (Concentration), Thermal Radiation, Energetic Particles, Energy Dissipation, Schwarzschild Metric, Temperature Gradients, Thermal Energy
Scientific paper
A method of extracting energy from black holes is proposed. Extremely high densities of particles are present at the horizon of a black hole, with an energy density and temperature that could be infinite. The hot particles on the horizon require constant acceleration to maintain their energy-enhanced state. A box lowered to near the horizon of a black hole could be opened, allowing the energetic particles to enter, and then closed. The buoyant forces of temperature (pressure) gradient would permit the box to be withdrawn from a safe distance, carrying with it the captured thermal energy. The minimum residence time on station for the energy scoop is calculated, together with the amount of energy available, the dimensions of the box, and the appropriate distance from the horizon.
Unruh William G.
Wald Robert M.
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