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    Near-horizon Kerr magnetosphere

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    PhysRevD.93.104041.pdf
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    Author
    Gralla, Samuel E.
    Lupsasca, Alexandru
    Strominger, Andrew
    Affiliation
    Univ Arizona, Dept Phys
    Issue Date
    2016-05-23
    
    Metadata
    Show full item record
    Publisher
    AMER PHYSICAL SOC
    Citation
    Near-horizon Kerr magnetosphere 2016, 93 (10) Physical Review D
    Journal
    Physical Review D
    Rights
    © 2016 American Physical Society.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    We exploit the near-horizon conformal symmetry of rapidly spinning black holes to determine universal properties of their magnetospheres. Analytic expressions are derived for the limiting form of the magnetosphere in the near-horizon region. The symmetry is shown to imply that the black hole Meissner effect holds for free Maxwell fields but is generically violated for force-free fields. We further show that in the extremal limit, near-horizon plasma particles are infinitely boosted relative to accretion flow. Active galactic nuclei powered by rapidly spinning black holes are therefore natural sites for high-energy particle collisions.
    ISSN
    2470-0010
    2470-0029
    DOI
    10.1103/PhysRevD.93.104041
    Version
    Final published version
    Sponsors
    National Science Foundation [1205550, 1506027]
    Additional Links
    http://link.aps.org/doi/10.1103/PhysRevD.93.104041
    ae974a485f413a2113503eed53cd6c53
    10.1103/PhysRevD.93.104041
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