Photon emission of extremal Kerr-Newman black holes
arXiv:1608.04262 · doi:10.1140/epjc/s10052-017-4699-7
Abstract
In this paper, we deal with the null geodesics extending from the near-horizon region out to a distant observatory in an extremal Kerr-Newman black hole background. In particular, using the matched asymptotic expansion method, we analytically solve the null geodesics near the superradiant bound in the form of algebraic equations. For the case that the photon trajectories are limited in the equatorial plane, the shifts in the azimuthal angle and time are obtained.
v3: 7 pages, 1 figure, improved version
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- Recent progress on the description of relativistic spin: vector model of spinning particle and rotating body with gravimagnetic moment in General Relativity
- Photon Emission Near Myers-Perry Black Holes in the Large Dimension Limit
- High spin expansion for null geodesics
- On the role of closed timelike curves and confinement structure around Kerr-Newman singularity