XIM—a Virtual X-ray Observatory: Investigating the X-ray Appearance and Line Profile Function of Vortex Rings in Galaxy Clusters

Type Journal Article
Names S. Heinz, M. Brüggen, S. Friedman
Publication The Astrophysical Journal Supplement Series
Volume 194
Pages 21
Date June 1, 2011
Short Title XIM—a Virtual X-ray Observatory
URL http://adsabs.harvard.edu/abs/2011ApJS..194...21H
Library Catalog NASA ADS
Abstract 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.
UW-Madison Astronomy Home