Two-Fluid Dynamics in Clusters of Galaxies Pairwise Velocity Statistics of Dark Halos

Details Two-Fluid Dynamics in Clusters of Galaxies Pairwise Velocity Statistics of Dark Halos Two-Fluid Dynamics in Clusters of Galaxies Pairwise Velocity Statistics of Dark Halos

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jena.confq..65a&link_type=abstract

"JENAM-2007, "Our non-stable Universe", held 20-25 August 2007 in Yerevan, Armenia. Abstract book, p. 65-65"

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I develop a theoretical formulation for the large-scale dynamics of galaxy clusters involving two spherical ‘isothermal fluids' coupled by their mutual gravity and derive asymptotic similarity solutions analytically. One of the fluids roughly approximates the massive dark matter halo, while the other describes the hot gas, the relatively small mass contribution from the galaxies being subsumed in the gas. By properly choosing the self-similar variables, it is possible to consistently transform the set of time-dependent two-fluid equations of spherical symmetry with self-gravity into a set of coupled nonlinear ordinary differential equations (ODEs). I will focus on the analytical analysis and discuss applications of the solutions to galaxy clusters

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