Extracting Energy from Black Hole through Transition Region

Abstract

A new scenario for extracting energy from a Kerr black hole is proposed. With magnetic field lines connecting plasma particles inside the ergosphere with remote loads, the frame dragging twists the field lines so that energy and angular momentum are extracted from the plasma particles. If the magnetic field is strong enough, the energy extracted from the particles can be so large that the particles have negative energy as they fall into the black hole. So effectively the energy is extracted from the black hole. The particles inside the ergosphere can be continuously replenished with accretion from a disk surrounding the black hole, so a transition region with sufficient amount of plasma is formed between the black hole's horizon and the inner edge of the disk. Thus the energy can be continuously extracted from the black hole through the transition region. This may be the most efficient way for extracting energy from a Kerr black hole: in principle almost all of the rotational energy (up to $\approx 29$ of the total energy of the black hole) can be extracted.

10 pages, 2 figures

References in corpus (8)

• Poynting Jets from Black Holes and Cosmological Gamma-Ray Bursts
• Magnetic Stress at the Marginally Stable Orbit: Altered Disk Structure, Radiation, and Black Hole Spin Evolution
• The Blandford-Znajek Process as a Centeral Engine for a Gamma Ray Burst
• A Magnetically-Switched, Rotating Black Hole Model For the Production of Extragalactic Radio Jets and the Fanaroff and Riley Class Division
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• Extracting Energy from a Black Hole through Its Disk
• Extracting Energy from Accretion into Kerr Black Hole

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• Wave Properties of Isothermal Magneto-Rotational Fluids
• A Toy Model for Magnetic Connection in Black-Hole Accretion Disc