Binary black holes at the core of galaxy clusters

Fabio Pizzolato*, Noam Soker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


In this paper, we push forward and exploit an analogy between the morphologies of the X-ray cavities observed in some galaxy clusters, and the optically deficient point-symmetric bubbles occurring in some planetary nebulae (PNe). Point-symmetric PNe are thought to be shaped by stellar binary interactions; namely, the presence of a companion to the PN's progenitor star is required. We suggest that similar point-symmetric structures in the X-ray cavities of galaxy clusters might be associated with the presence of massive binary black holes. A systematic cataloguing of high-resolution images of the diffuse X-ray emission at the core of galaxy clusters might contribute to individuate massive binary black holes.

Original languageEnglish
Pages (from-to)762-766
Number of pages5
JournalAdvances in Space Research
Issue number4
StatePublished - 2005
Externally publishedYes


  • (ISM:) planetary nebulae: individual (Hb 5, He 2-47)
  • Galaxies: Jets
  • Galaxies: clusters: individual (MS 0735.6+7421)
  • ISM: planetary nebulae: general
  • Stars: AGB and post-AGB
  • X-rays: galaxies: clusters

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