Global visibility of naked singularities

TL;DR

This paper investigates the conditions under which naked singularities can be globally visible in more realistic spherically symmetric spacetimes with non-zero pressures, extending previous dust collapse models.

Contribution

It demonstrates the existence of nonradial geodesics escaping from singularities in physically valid models with pressures, broadening understanding of naked singularity visibility.

Findings

Nonradial geodesics can escape from singularities.

Naked singularities can be observable from distant observers.

Extended analysis beyond dust collapse models.

Abstract

Global visibility of naked singularities is analyzed here for a class of spherically symmetric spacetimes, extending previous studies - limited to inhomogeneous dust cloud collapse - to more physical valid situations in which pressures are non-vanishing. Existence of nonradial geodesics escaping from the singularity is shown, and the observability of the singularity from far-away observers is discussed.