Timelike Killing vectors and ergo surfaces in non-asymptotically flat spacetimes

被引：0
|
作者：
N. Pelavas
机构：
[1] Dalhousie University,Department of Mathematics and Statistics
来源：
General Relativity and Gravitation | 2005年 / 37卷
关键词：
Cosmological constant; Killing observers; Vorticity; Penrose process;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
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.
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页码：313 / 326
页数：13
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