On the nature of gravitational forces

Details On the nature of gravitational forces On the nature of gravitational forces

2008-01-07

arxiv.org/abs/0801.1096v1

Int.J.Mass Spectr.Ion Process.16:1349-1369,2007

Astronomy and Astrophysics

Astrophysics

Scientific paper

10.1142/S0218271807010808

In this paper I show how the statistics of the gravitational field is changed when the system is characterized by a non-uniform distribution of particles. I show how the distribution functions W(dF/dt) giving the joint probability that a test particle is subject to a force F and an associated rate of change of F given by dF/dt, are modified by inhomogeneity. Then I calculate the first moment of dF/dt to study the effects of inhomogenity on dynamical friction. Finally I test, by N-Body simulations, that the theoretical W(F) and dF/dt describes correctly the experimental data and I find that the stochastic force distribution obtained for the evolved system is in good agreement with theory. Moreover, I find that in an inhomogeneous background the friction force is actually enhanced relative to the homogeneous case.

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