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Circular motion and Polish Doughnuts in NUT spacetime

Published online by Cambridge University Press:  23 June 2017

Paul I. Jefremov
Paul I. Jefremov*
Affiliation:
ZARM – Centre for Applied Space Technology and Microgravity, University of Bremen, Am Fallturm, 28359 Bremen, Germany email: paul.jefremow@zarm.uni-bremen.de
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Abstract

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The astrophysical relevance of the NUT spacetime(s) is a matter of debate due to pathological properties exhibited by this solution. However, if it is realised in nature, then we should look for the characteristic imprints of it on possible observations. One of the major sources of data on black hole astrophysics is the accretion process. Using a simple but fully analytical “Polish Doughnuts” model of accretion disk one gets both qualitative and quantitative differences from the Kerr spacetime produced by the presence of the gravitomagnetic charge. The present paper is based on our work Jefremov & Perlick (2016).

Keywords

Accretion diskshydrodynamicsrelativityblack hole physics

References

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