Localized Objects Formed by Self-Trapped Gravitational Waves

Research output: Contribution to journalArticle


Geons are localized horizonless objects formed by gravitational waves, held together by the gravitational attraction of their own field energy. In many respects they are similar to scalar field pulson/oscillon configurations, which were found numerically in 1976 by Kudryavtsev, Bogolyubskii, and Makhankov. If there is a negative cosmological constant, the spacetime of geons asymptotically approaches the anti-de Sitter (AdS) metric. AdS geons are time-periodic regular localized vacuum solutions without any radiation loss at infinity. A higher order perturbative construction in terms of an amplitude parameter shows that there are one-parameter families of AdS geon solutions emerging from combinations of identical-frequency linear modes of the system.

Original languageEnglish
Pages (from-to)874-881
Number of pages8
JournalAstronomy Reports
Issue number12
Publication statusPublished - Dec 1 2018

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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