Negative Komar Masses in Regular Stationary Spacetimes

Details Negative Komar Masses in Regular Stationary Spacetimes Negative Komar Masses in Regular Stationary Spacetimes

2007-08-29

arxiv.org/abs/0708.3899v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

3 pages, submitted to the Proceedings of the MGXI Meeting

Scientific paper

A highly accurate multi-domain spectral method is used to study axially symmetric and stationary spacetimes containing a black hole or disc of dust surrounded by a ring of matter. It is shown that the matter ring can affect the properties of the central object drastically. In particular, by virtue of the ring's frame dragging, the so-called Komar mass of the black hole or disc can become negative. A continuous transition from such discs to such black holes can be found.

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