University of Hertfordshire

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Parameters for very light jets of cD galaxies

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  • 0301289v1

    Accepted author manuscript, 219 KB, PDF document

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Original languageEnglish
Number of pages4
Pages (from-to)573-576
JournalNew Astronomy Reviews
Journal publication date1 Oct 2003
Volume47
Issue6-7
Early online date26 Sep 2003
DOIs
Publication statusPublished - 1 Oct 2003

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 ≈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.

Notes

This document is the Accepted Manuscript version of the following article: M. Krause and M. Camenzind, 'Parameters for very light jets of cD galaxies', New Astronomy Reviews, Vol. 47 (6-7): 573-576, October 2003. The version of record is available online at doi: 10.1016/S1387-6473(03)00096-4 Copyright © 2003 Elsevier B.V. All rights reserved.

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