The stability of orbit of a planet in the field of binary stars

Abstract

In the paper, we consider the motion of a planet in the field of the binary stars in the theory of generalrelativity (GR), when all bodies have their own rotation. We consider that the third body moves in the planof massive two bodies. The binary system orbit around the center of mass (sometimes referred to as thebarycenter), in a circular orbit. The third body orbits closer to the primary star and does not affect the orbitof the secondary body. In fact, this problem belongs to the gravitational restricted three-body problem. Weinvestigate the stability of the circular orbit of the planet in the binary system using the adiabatic theory ofmotion. The adiabatic theory of motion of bodies is the approach to study the evolutionary motion of bodiesin the GR. The corresponding theory based on the vector elements of orbit to describe the motion of bodiesand based on the asymptotic methods of nonlinear oscillations and in the method of adiabatic invariants.

Keywords

• general relativity
• neutron stars
• rotational motion
• translational motion
• stability of motion