Strings in Kerr-Newmann Black Holes

Abstract

We study the evolution of strings in the equatorial plane of a Kerr-Newmann black hole. Writting the equations of motion and the constraints resulting from Hamilton's principle, three classes of exact solutions are presented, for a closed string, encircling the black hole. They all depend on two arbitrary integration functions and two constants. A process of extracting energy is examined for the case of one of the three families of solutions. This is the analog of the Penrose process for the case of a particle.

14 pages, no figures, LaTeX. To appear in Gen. Rel. Grav

References in corpus (3)

• Rigidly Rotating Strings in Stationary Spacetimes
• How to Create a 2-D Black Hole
• Null Strings in Kerr Spacetime

Cited by in corpus (3)

• Energy extraction from Kerr black holes by rigidly rotating strings
• Exact String Solutions in Nontrivial Backgrounds
• Rotating elastic string loops in flat and black hole spacetimes: stability, cosmic censorship and the Penrose process