Gravitational lensing by stars with angular momentum
M. SerenoDipartimento di Scienze Fisiche, Università degli Studi di Napoli ‘Federico II’, and Istituto Nazionale di Fisica Nucleare, Sez. Napoli, Compl. Università Monte S. Angelo, via Cinthia, 45–80126, Napoli, Italia
2003en
ABI
Abstract
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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Cited by 50 references