Turkish Physical Society 38th International Physics Congress, Muğla, Türkiye, 31 Ağustos - 04 Eylül 2022, ss.235
We
will talk about the deflection of light rays from a compact object in both of
theories, namely in Brans-Dicke
theory with a cosmological constant (BDɅ) and Brans
Dicke theory with an arbitrary potential (BDV) in the linearized order. We will consider the weak field
solutions for a massive point particle for
both theories in the linear approximation. Then
geodesics of these solutions will be presented in Schwarzshild coordinates. Using the geodesic
equations, particle
motion of test particles will be investigated with the focus on the deflection
of light rays. We will also discuss the
effects of the point mass and the presence of the cosmological term on the
motions of test particles and photons. Finally we will compare
the obtained solutions with the results of General Relativity.