# Effects of albedo and disc on the zero velocity curves and linear stability of equilibrium points in the generalized restricted three body problem

## TL;DR

This paper investigates how albedo and a disc influence the zero velocity curves, equilibrium points, and their linear stability in a generalized restricted three-body problem involving radiating and oblate bodies, revealing significant effects on stability regions.

## Contribution

It introduces a comprehensive analysis of the combined effects of albedo, oblateness, and a disc on equilibrium stability in a generalized three-body problem, extending previous models.

## Key findings

- Albedo and disc significantly alter zero velocity curves.
- Collinear points are unstable under studied conditions.
- Non-collinear points can be stable within certain parameters.

## Abstract

The most important aspects of a dynamical system are its stability and the factors which affects the stability property. This paper presents the analysis of the effects of albedo and disc on the zero velocity curves, existence of equilibrium points and on their linear stability in a generalized restricted three body problem that consists of motion of an infinitesimal mass under the uniform gravity field of radiating-oblate primary, oblate secondary and a disc, which is rotating about the common center of the mass of the system. A significant effect of albedo and disc are observed on the zero velocity curves, positions of equilibrium points and on the stability region. Linear stability analysis of collinear equilibrium points is performed with respect to mass ratio $\mu$ and albedo parameter of secondary, separately and it is found that these are unstable in both the cases. On the other hand, non-collinear equilibrium point is stable in a certain range of mass ratio. After analyzing individual as well as combined effect of radiation pressure force of the primary, albedo of secondary, oblateness of both the massive bodies and the disc, it is found that these perturbations play a significant on the motion of infinitesimal mass in the vicinity of equilibrium points. These results may be help to analyze more generalized problem of few bodies under the influence of different kind of perturbations such as P-R drag, solar wind drag etc. Present study is limited to the regular symmetric disc which will extend later.