Gravitational collapse of null strange quark fluid and cosmic censorship

TL;DR

This paper investigates how the presence of strange quark matter influences gravitational collapse, showing that it can prevent naked singularities and support the Cosmic Censorship Conjecture in spherically symmetric models.

Contribution

It introduces a model of null strange quark fluid with a specific equation of state and demonstrates its effect on the visibility of singularities during collapse.

Findings

Strange quark matter can cover naked singularities in collapse.

The presence of quark matter supports the Cosmic Censorship Conjecture.

Initial data leading to naked singularities can be hidden by quark matter effects.

Abstract

We study gravitational collapse of the general spherically symmetric null strange quark fluid having the equation of state, $p = (\rho - 4B)/n$, where $B$ is the bag constant. An interesting feature that emerges is that the initial data set giving rise to naked singularity in the Vaidya collapse of null fluid gets covered due to the presence of strange quark matter component. Its implication to the Cosmic Censorship Conjecture is discussed.