Phantom Energy Accretion by Stringy Charged Black Hole

TL;DR

This paper studies how phantom energy accretes onto a stringy magnetically charged black hole, showing it decreases the black hole's mass and supports the cosmic censorship hypothesis by preventing extremal or naked singularities.

Contribution

It derives equations for steady-state phantom energy accretion onto stringy charged black holes and analyzes the impact on black hole mass and cosmic censorship.

Findings

Phantom energy accretion decreases black hole mass.

Critical points relate to mass-to-charge ratio.

Accretion does not lead to extremal or naked singularities.

Abstract

We investigate the dynamical behavior of phantom energy near stringy magnetically charged black hole. For this purpose, we derive equations of motion for steady-state spherically symmetric flow of phantom energy onto the stringy magnetically charged black hole. It is found that phantom energy accreting onto black hole decreases its mass. Further, the location of critical points of accretion is explored, which yields mass to charge ratio. This ratio implies that accretion process cannot transform a black hole into an extremal black hole or a naked singularity, hence cosmic censorship hypothesis remains valid here.