Bound on Rindler trajectories in a black hole spacetime

We investigate radial Rindler trajectories in a static spherically symmetric black hole spacetime. We assume the trajectory to remain linearly uniformly accelerated throughout its motion, in the sense of the curved spacetime generalization of the Letaw-Frenet equations. For the Schwarzschild spacetime, we arrive at a bound on the magnitude of the acceleration vertical bar a vertical bar for radially inward moving trajectories, in terms of the mass M of the black hole given by vertical bar a vertical bar <= 1/( root 27M) for a particular choice of asymptotic initial data h, such that, for acceleration Ian greater than the bound value, the linearly uniformly accelerated trajectory always falls into the black hole. For a satisfying the bound, there is a minimum radius or the distance of closest approach for the radial linearly uniformly accelerated trajectory to escape back to infinity. However, this distance of closest approach is found to approach its lowest value of r(b) = 3M, greater than the Schwarzschild radius of the black hole, when the bound, vertical bar a vertical bar = 1/(root 27M), is saturated. We further show that a finite bound on the value of acceleration, vertical bar a vertical bar <= B(M, h), and a corresponding distance of closest approach r(b) > 2M always exists, for all (mite asymptotic initial data h.