Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011apjs..194...21h&link_type=abstract
The Astrophysical Journal Supplement, Volume 194, Issue 2, article id. 21 (2011).
Astronomy and Astrophysics
Astronomy
3
Galaxies: Clusters: General, Methods: Numerical, Radiation Mechanisms: Thermal, Telescopes
Scientific paper
We present virtual observations of a simulated vortex ring in a galaxy cluster (such as the Virgo Cluster, where such a ring has been observed), using the virtual X-ray observatory software XIM. We derive the expected surface brightness distributions and color maps for a vortex seen at different line-of-sight angles. We present the line profile function phi(δν) for the velocity field of a vortex ring as derived from the observations and show that the line core has a frequency dependence of phi vprop (δν/ν0)-2 and derive this form of the line profile from the analytic description of the asymptotic behavior of the velocity field of a vortex ring. We discuss further examples of the application of XIM to studies of galaxy clusters and present the capabilities and methodology of the publicly available code XIM.
Brüggen Marcus
Friedman Scott
Heinz Sebastian
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