Parameters for Very Light Jets of cD Galaxies
arXiv:astro-ph/0301289 · doi:10.1016/S1387-6473(03)00096-4
Abstract
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 roughly 10000) 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, 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.
4 pages, 2 figures, New Astron. Rev., proceedings of the conference in Bologna: "The Physics of Relativistic Jets in the CHANDRA and XMM Era", Sep.,2002
References in corpus (1)
Cited by in corpus (5)
- Very Light Jets II: Bipolar large scale simulations in King atmospheres
- Metal enrichment processes
- Galactic Wind Shells and High Redshift Radio Galaxies On the Nature of Associated Absorbers
- Numerical modelling of the lobes of radio galaxies -- Paper V: Universal Pressure Profile cluster atmospheres
- Large scale simulations of the jet-IGM interaction