Naked Singularities, Cosmic Time Machines and Impulsive Events

Understand

Continued gravitational collapse gives rise to curvature singularities.

• If a curvature singularity is globally naked then the space-time may be causally future ill-behaved admitting closed time-like or null curves which extend to asymptotic distances and generate a Cosmic Time Machine (de Felice (1995) Lecture Notes in Physics 455, 99).
• The conjecture that Cosmic Time Machines give rise to high energy impulsive events is here considered in more details.