Parameters for very light jets of cD galaxies

M. Krause, M. Camenzind

Research output: Contribution to journalArticle

25 Citations (Scopus)
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Recent Chandra X-ray observations of jets in central cluster galaxies show interesting features around the symmetry plane. We have carried out simulations involving bipolar jets, removing the artificial boundary condition at the symmetry plane. We use a very low jet density (IGM/jet ≈104) and take into account a decreasing density profile. We find that the jet bow shock undergoes two phases: First a nearly spherical one and second the well-known cigar-shaped one. We propose Cygnus A to be in a transition phase, showing clear signs from both phases. Due to inward growing of Kelvin Helmholtz instabilities (KHI) between cocoon and shocked IGM, mass entrainment is observed predominantly in the symmetry plane. We propose this mechanism to produce some of the so far enigmatic X-ray features in the symmetry plane in Cygnus A.
Original languageEnglish
Pages (from-to)573-576
Number of pages4
JournalNew Astronomy Reviews
Issue number6-7
Early online date26 Sept 2003
Publication statusPublished - 1 Oct 2003


  • hydrodynamics
  • simulation
  • jet propagation


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