On some relativistic singular surfaces

TL;DR

This paper clarifies misconceptions about certain relativistic singular surfaces through precise geometric analysis, emphasizing their lack of physical significance and discussing related observational findings.

Contribution

It provides a rigorous geometric clarification of relativistic singular surfaces, correcting misleading interpretations in existing literature.

Findings

Singular surfaces lack physical meaning in relativistic contexts.

Accurate geometric analysis resolves misconceptions about these surfaces.

Discussion of recent observational data related to the topic.

Abstract

In the current relativistic literature there are misleading considerations about some singular surfaces. An accurate geometric analysis allows to settle the question. No physical meaning is attributable to the spatial regions surrounded by the above surfaces. A recent observational paper by A. Fabian et al. is discussed in sect.4.