Skip to content

The 2m <= r property of spherically symmetric static spacetimes

Marc Mars, M. M. Martin-Prats, Jose M. M. Senovilla

gr-qcarXiv:gr-qc/0202003

Abstract

We prove that all spherically symmetric static spacetimes which are both regular at r=0 and satisfying the single energy condition rho + pr + pt >= 0 cannot contain any black hole region (equivalently, they must satisfy 2m/r <= 1 everywhere). This result holds even when the spacetime is allowed to contain a finite number of matching hypersurfaces. This theorem generalizes a result by Baumgarte and Rendall when the matter contents of the space-time is a perfect fluid and also complements their results in the general non-isotropic case.

Create a lesson