Gravitomagnetic corrections to the lensing deflection angle for spiral galaxy models

Details Gravitomagnetic corrections to the lensing deflection angle for spiral galaxy models Gravitomagnetic corrections to the lensing deflection angle for spiral galaxy models

2003-04-15

arxiv.org/abs/astro-ph/0304272v1

Mon.Not.Roy.Astron.Soc. 343 (2003) 360

Astronomy and Astrophysics

Astrophysics

7 pages, 2 figures, accepted for publication on MNRAS

Scientific paper

10.1046/j.1365-8711.2003.06671.x

We investigate the effects of the gravitomagnetic corrections to the usual gravitational lens quantities for a specific lensing mass distribution modelled after spiral galaxies. An exponential disk is embedded into two different spherical halo models where disk and haloes parameters are fixed according to the observed mass to light ratios, galaxy magnitudes and rotation curves. The general expressions for the lensing deflection angle are given also taking into account the orientation of the galaxy disk plane with respect to the lens plane. It is found that the gravitomagnetic term changes the deflection angle by a typical amount of the order of ten microarcseconds.

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