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Formation of accretion disk / frame drag

  1. Dec 16, 2012 #1
    came across the concept of Frame dragging.
    i cannot find if this phenomena also aids in addition to the conversation of angular momentum the formation of an accretion disk around neutron stars/black holes.
  2. jcsd
  3. Dec 16, 2012 #2


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    Gold Member

    It seems clear that yes, Frame dragging does contribute to disk formation around supermassive black holes and active galactic nuclei. Here are some references:

    THE ASTROPHYSICAL JOURNAL, 475:57 64, 1997 January 20
    Line Emission from an Accretion Disk around a Rotating Black Hole: Toward a Measurement of Frame Dragging
    Theoretical Astrophysics Group, T-6, MS B288, Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545
    Received 1995 December 15; accepted 1996 August 8
    Excerpt from the “Discussion” section:
    “For these reasons, we feel justified in choosing diagnostics of a line-emitting accretion disk as a probe for frame-dragging effects in the nuclei of active galaxies. As noted before (Laor 1991), perhaps the best hope of detecting the frame-dragging effect is to spot a stable Keplerian accretion disk at radii below the limit of 6Rg imposed in a Schwarzschild metric.”

    (Note: This paper was written and published before Gravity Probe B positive results were announced.)
    See section five:
    “Frame-dragging: occurs generally around rotating objects. It's just that the exact
    Kerr form only applies to black holes.”

    Disc Accretion in Active Galactic Nuclei
    Andrew King
    Theoretical Astrophysics Group, University of Leicester, Leicester LE1 7RH, UK
    www.vlti.org/events/assets/3/documents/king.pdf [Broken]

    Four other possiblilities:

    Title: The effect of frame dragging on the iron K alpha line in X-ray binaries
    Authors:Adam Ingram, Chris Done
    Title: Iron line profiles and self-shadowing from relativistic thick accretion discs
    Authors:Sheng-Miao Wu, Ting-Gui Wang
    Title: Gravitating discs around black holes
    Authors:V. Karas, J.-M. Hure, O. Semerak
    Title: Radiation force on relativistic jets in active galactic nuclei
    Authors:Qinghuan Luo, R. J. Protheroe
    Last edited by a moderator: May 6, 2017
  4. Dec 16, 2012 #3
    thanks for the links...
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