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ID: 297776.0, MPI für Gravitationsphysik / Geometric Analysis and Gravitation
Negative Komar mass of single objects in regular, asymptotically flat spacetimes
Authors:Ansorg, Marcus; Petroff, David
Language:English
Date of Publication (YYYY-MM-DD):2006-12-21
Title of Journal:Classical and Quantum Gravity
Journal Abbrev.:Class. Quantum Gravity
Volume:23
Issue / Number:24
Start Page:L81
End Page:L87
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:We study two types of axially symmetric, stationary and asymptotically flat spacetimes using highly accurate numerical methods. One type contains a black hole surrounded by a perfect fluid ring and the other a rigidly rotating disc of dust surrounded by such a ring. Both types of spacetime are regular everywhere (outside of the horizon in the case of the black hole) and fulfil the requirements of the positive energy theorem. However, it is shown that both the black hole and the disc can have a negative Komar mass. Furthermore, there exists a continuous transition from discs to black holes even when their Komar masses are negative.
External Publication Status:published
Document Type:Article
Communicated by:Gerhard Huisken
Affiliations:MPI für Gravitationsphysik/Geometric Analysis and Gravitation
External Affiliations:Max Planck Gravitationsphys, D-14476 Golm, Germany.; Univ Jena, Theoret Phys Inst, D-07743 Jena, Germany.
Identifiers:ISI:000242327900001 [ID No:1]
ISSN:0264-9381 [ID No:2]
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