Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2006-04-21
Phys.Rev. D74 (2006) 063001
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
17 pages, 4 figures, one section added, to appear on Physical Review D
Scientific paper
10.1103/PhysRevD.74.063001
We generalize our previous work on gravitational lensing by a Kerr black hole in the strong deflection limit, removing the restriction to observers on the equatorial plane. Starting from the Schwarzschild solution and adding corrections up to the second order in the black hole spin, we perform a complete analytical study of the lens equation for relativistic images created by photons passing very close to a Kerr black hole. We find out that, to the lowest order, all observables (including shape and shift of the black hole shadow, caustic drift and size, images position and magnification) depend on the projection of the spin on a plane orthogonal to the line of sight. In order to break the degeneracy between the black hole spin and its inclination relative to the observer, it is necessary to push the expansion to higher orders. In terms of future VLBI observations, this implies that very accurate measures are needed to determine these two parameters separately.
Bozza Valerio
de Luca Fabiana
Scarpetta Gaetano
No associations
LandOfFree
Kerr black hole lensing for generic observers in the strong deflection limit does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Kerr black hole lensing for generic observers in the strong deflection limit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kerr black hole lensing for generic observers in the strong deflection limit will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-627094