Gravitational lensing by stars with angular momentum

Details Gravitational lensing by stars with angular momentum Gravitational lensing by stars with angular momentum

2003-07-11

arxiv.org/abs/astro-ph/0307243v1

Mon.Not.Roy.Astron.Soc.344:942,2003

Astronomy and Astrophysics

Astrophysics

9 pages, 9 figures; to appear in MNRAS

Scientific paper

10.1046/j.1365-8711.2003.06881.x

Gravitational lensing by spinning stars, approximated as homogeneous spheres,
is discussed in the weak field limit. Dragging of inertial frames, induced by
angular momentum of the deflector, breaks spherical symmetry. I examine how the
gravito-magnetic field affects image positions, caustics and critical curves.
Distortion in microlensing-induced light curves is also considered.

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