English

The Ernst equation and ergosurfaces

General Relativity and Quantum Cosmology 2010-12-23 v2

Abstract

We show that analytic solutions \mcE\mcE of the Ernst equation with non-empty zero-level-set of \mcE\Re \mcE lead to smooth ergosurfaces in space-time. In fact, the space-time metric is smooth near a "Ernst ergosurface" EfE_f if and only if \mcE\mcE is smooth near EfE_f and does not have zeros of infinite order there.

Keywords

Cite

@article{arxiv.gr-qc/0603041,
  title  = {The Ernst equation and ergosurfaces},
  author = {Piotr T. Chrusciel and Gert-Martin Greuel and Reinhard Meinel and Sebastian J. Szybka},
  journal= {arXiv preprint arXiv:gr-qc/0603041},
  year   = {2010}
}

Comments

23 pages, 4 figures; misprints corrected

R2 v1 2026-07-22T12:44:51.467Z