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Non-degenerate Killing horizons in analytic vacuum spacetimes

Time: Tue 2022-09-06 10.15 - 11.15

Location: Room 3418, Lindstedtsvägen 25

Language: English

Participating: Oliver Lindblad Petersen, KTH

I will present a geometric characterization of all possible 4-dimensional real analytic vacuum spacetimes near non-degenerate Killing horizons. This result applies in particular to bifurcate horizons (e.g. black hole event horizons) and non-degenerate compact Cauchy horizons in real analytic vacuum spacetimes, since classical results of Hawking and Moncrief-Isenberg (and recent generalizations thereof) show that such horizons are non-degenerate Killing horizons. This is joint work with Klaus Kröncke.