publication . Article . Book . Part of book or chapter of book . Conference object . Preprint . 2015

Black holes

Roger Penrose;
Open Access
  • Published: 01 Jun 2015 Journal: Nature Astronomy, volume 3, pages 2-5 (eissn: 2397-3366, Copyright policy)
  • Publisher: Springer Science and Business Media LLC
Abstract
This paper is concerned with several not-quantum aspects of black holes, with emphasis on theoretical and mathematical issues related to numerical modeling of black hole space-times. Part of the material has a review character, but some new results or proposals are also presented. We review the experimental evidence for existence of black holes. We propose a definition of black hole region for any theory governed by a symmetric hyperbolic system of equations. Our definition reproduces the usual one for gravity, and leads to the one associated with the Unruh metric in the case of Euler equations. We review the global conditions which have been used in the Scri-ba...
Subjects
arXiv: Astrophysics::High Energy Astrophysical Phenomena
free text keywords: General Medicine, Multidisciplinary, General Physics and Astronomy, General Relativity and Quantum Cosmology
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