| MadSci Network: Physics |
An interesting thought. In the garden-variety general-relativity model for a black hole, it can trap light even if it is not magnetized, purely by the effect of gravity. Of course, we don't have much (or any?) observational evidence just how this actually works. As for the magnetic field, to first order it will not interact with photons of light. For very high energies, however, such as gamma rays, interactions can become important. But I would hazard a guess that one could not hope to trap photons anywhere purely with magnetic fields. (Be warned! My guesses are often wrong...)
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