University of Hertfordshire

From the same journal

From the same journal

By the same authors


  • aa20049-12

    Final published version, 565 KB, PDF document

  • J. Silk
  • V. Antonuccio-Delogu
  • Y. Dubois
  • V. Gaibler
  • M.~R. Haas
  • S. Khochfar
  • Martin Krause
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Original languageEnglish
Number of pages4
Pages (from-to)L11
JournalAstronomy & Astrophysics
Journal publication date21 Sep 2012
Publication statusPublished - 21 Sep 2012


The hypervelocity OB stars in the Milky Way Galaxy were ejected from the central regions some 10-100 million years ago. We argue that these stars, as well as many more abundant bound OB stars in the innermost few parsecs, were generated by the interactions of an AGN jet from the central black hole with a dense molecular cloud. Considerations of the associated energy and momentum injection have broader implications for the possible origin of the Fermi bubbles and for the enrichment of the intergalactic medium.


Reproduced with permission from Astronomy & Astrophysics, © 2012 ESO. Published by EDP Sciences

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