Black hole collisions in asymptotically de sitter spacetimes

Miguel Zilhão, Vitor Cardoso, Leonardo Gualtieri, Carlos Herdeiro, Ulrich Sperhake, Helvi Witek

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We report on the first dynamical evolutions of black holes in asymptotically de Sitter spacetimes.We focus on the head-on collision of equal mass binaries and compare analytical and perturbative methods with full blown nonlin-ear simulations. Our results include an accurate determination of the merger/scatter transition (consequence of an expanding background) for small mass binaries and a test of the Cosmic Censorship conjecture, for large mass binaries. We observe that, even starting from small separations, black holes in large mass binaries eventually lose causal contact, in agreement with the conjecture.

Original languageEnglish (US)
Title of host publicationRelativity and Gravitation - 100 years after Einstein in Prague
EditorsJiří Bičák, Tomáš Ledvinka
Number of pages8
ISBN (Electronic)9783319067605
StatePublished - 2014
Externally publishedYes
EventInternational conference on Relativity and Gravitation, 2012 - Prague, Czech Republic
Duration: Jun 25 2012Jun 29 2012

Publication series

NameSpringer Proceedings in Physics
ISSN (Print)0930-8989
ISSN (Electronic)1867-4941


ConferenceInternational conference on Relativity and Gravitation, 2012
Country/TerritoryCzech Republic

ASJC Scopus subject areas

  • General Physics and Astronomy


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