Event horizons and apparent horizons in spherically symmetric geometries

Edward Malec
Phys. Rev. D 49, 6475 – Published 15 June 1994
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Abstract

Spherical configurations that are very massive must be surrounded by apparent horizons. These, in turn, when placed outside a collapsing body, have a fixed area and must propagate outward with a velocity equal to the velocity of radially outgoing photons. That proves, within the framework of the 1+3 formalism and without resorting to the Birkhoff theorem, that apparent horizons coincide with event horizons in an electrovacuum. The existence of the maximal slicing of electrovacuum is proved and an explicit line element is found in the maximal foliation.

  • Received 15 March 1993

DOI:https://doi.org/10.1103/PhysRevD.49.6475

©1994 American Physical Society

Authors & Affiliations

Edward Malec

  • Physics Department, UCC, Cork, Ireland
  • Institute of Physics, UJ 30-059 Cracow, Reymonta 4, Poland

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Issue

Vol. 49, Iss. 12 — 15 June 1994

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