Gravitational Lensing and Gravitomagnetic Time Delay

Details Gravitational Lensing and Gravitomagnetic Time Delay Gravitational Lensing and Gravitomagnetic Time Delay

2003-01-08

arxiv.org/abs/gr-qc/0301030v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Submitted to Physical Review Letters: 8 April 2002. Resubmitted, revised: 31 July 2002; 31 December 2002

Scientific paper

We derive the delay in travel time of photons due to the spin of a body both inside a rotating shell and outside a rotating body. We then show that this time delay by the spin of an astrophysical object might be detected in different images of the same source by gravitational lensing; it might be relevant in the determination of the Hubble constant using accurate measurements of the time delay between the images of some gravitational lens systems. The measurement of the spin-time-delay might also provide a further observable to estimate the dark matter content in galaxies, clusters, or super-clusters of galaxies.

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