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Timelike Killing vectors and ergo surfaces in non-asymptotically flat spacetimes |
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| Authors: | N.?Pelavas mailto:pelavas@mathstat.dal.ca" title=" pelavas@mathstat.dal.ca" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author |
| Affiliation: | (1) Department of Mathematics and Statistics, Dalhousie University, Halifax, Nova Scotia, Canada |
| Abstract: | Ergo surfaces are investigated in spacetimes with a cosmological constant. We find the existence of multiple timelike Killing vectors, each corresponding to a distinct ergo surface, with no one being preferred. Using a kinematic invariant, which provides a measure of hypersurface orthogonality, we explore its potential role in selecting a preferred timelike Killing vector and consequently a unique ergo surface. |
| Keywords: | Cosmological constant Killing observers Vorticity Penrose process |
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