General tachyon absorption by Kerr-Newman black holes: thermodynamic consequences

Following the analyses of B. Carter and J.V. Narlikar, the nature of the incomplete, space-like trajectories about a charged, rotating black hole is described. The study concentrates on those paths which a charged tachyon would follow, incident from off the equatorial plane (on which theta = π/2). The effect of the absorption upon the black hole is calculated and it is concluded that for thetasub(i) is not equal to π/2 only certain charged tachyons will reduce its entropy. However, a sustained bombardment by such particles could cause the singularity to be exposed. (author)