On gravito-magnetic time delay by extended lenses

Abstract

Gravitational lensing by rotating extended deflectors is discussed. Due to spin, corrections on image positions, caustics and critical curves can be significant. In order to obtain realistic quantitative estimates, the lens is modeled as a singular isothermal sphere. Gravito-magnetic time delays of nearly 0.2 days between different images of background sources can occur.

7 pages; 5 figures; this is a preprint of an article accepted for publication in MNRAS

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• The impact of the new Earth gravity models on the measurement of the Lense-Thirring effect with a new satellite
• Gravitomagnetism and the Speed of Gravity
• Primary caustics and critical points behind a Kerr black hole
• Roto-translational Effects on Deflection of Light and Particle by Moving Kerr Black Hole
• A tale of analogies: gravitomagnetic effects, rotating sources, observers and all that
• An assessment of the measurement of the Lense-Thirring effect in the Earth gravity field, in reply to: ``On the measurement of the Lense-Thirring effect using the nodes of the LAGEOS satellites, in reply to ``On the reliability of the so far performed tests for measuring the Lense-Thirring effect with the LAGEOS satellites'' by L. Iorio,'' by I. Ciufolini and E. Pavlis
• On gravitational lensing by deflectors in motion
• Kinematic effect in gravitational lensing by clusters of galaxies
• Measuring the gravitomagnetic distortion from rotating halos I: methods
• Gravitational lensing observables in stationary and axisymmetric solutions in general relativity