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We investigate the spherical photon orbits in near-extremal Kerr spacetimes. We show that the spherical photon orbits with impact parameters in a finite range converge on the event horizon. Furthermore,… Click to show full abstract
We investigate the spherical photon orbits in near-extremal Kerr spacetimes. We show that the spherical photon orbits with impact parameters in a finite range converge on the event horizon. Furthermore, we demonstrate that the Weyl curvature near the horizon does not generate the shear of a congruence of such light rays. Due to this property, a series of images produced by the light orbiting around a near-extremal Kerr black hole several times can be observable.
Keywords:
photon orbits;
spherical photon;
near extremal;
orbits near;
extremal kerr
Journal Title: Physical Review D
Year Published: 2019
Link to full text (if available)
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Journal Title: Physical Review D
Year Published: 2019
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!