Cosmic censorship in overcharging a Reissner-Nordstr\"{o}m black hole via charged particle absorption

Understand

There is a claim that a static charged black hole (Reissner-Nordstr\"{o}m black hole) can be overcharged by absorbing a charged test particle.

• If it is true, it might give a counter example to the weak cosmic censorship conjecture, which states that spacetime singularities are never observed by a distant observer.
• However, so far the proposed process has only been analyzed within a test particle approximation.
• Here we claim that the back reaction effects of a charged particle cannot be neglected when judging whether the suggested process is really a counter example to the cosmic censorship conjecture or not.