On gravitational effects in the field of a cosmic string and a central body
Abstract
The influence of an infinite linear cosmic string directed along the polar axis of the Schwarzschild and Kerr gravitational fields upon the motion of a test body near the equatorial circular orbits is considered. It is shown that the string gives an additional periastron shift of an elliptical orbit with a small eccentricity and leads to a precession of the orbital plane when small deviations from the equatorial plane are allowed.
 Publication:

Pisma v Astronomicheskii Zhurnal
 Pub Date:
 February 1988
 Bibcode:
 1988PAZh...14..116A
 Keywords:

 Cosmology;
 Gravitational Effects;
 Gravitational Fields;
 String Theory;
 Circular Orbits;
 Eccentric Orbits;
 Elliptical Orbits;
 Schwarzschild Metric;
 Astrophysics