期刊
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
卷 194, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0067-0049/194/2/21
关键词
galaxies: clusters: general; methods: numerical; radiation mechanisms: thermal; telescopes
资金
- NASA [TM9-0007X]
- NSF [AST0707682]
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(delta v) 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 proportional to (delta v/delta v(0))(-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.
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