Mergers of Systems Containing Gas
Astrophysics
2015-06-24 v1
Abstract
Several simple mergers between model galaxy clusters containing a mixture of gas and dark matter are examined, testing the coupling of the gas to the underlying collisionless material. The gas is shocked, irreversibly dissipating the energy fed into it by the collisionless component and forms a resolved constant-density core. For the dark matter, however, admixture of phase space vacuum is not very efficient and a constant-density core is not produced. In the final state the central gas has little residual kinetic energy, indicating that streaming motions do not help to support the gas.
Cite
@article{arxiv.astro-ph/9310023,
title = {Mergers of Systems Containing Gas},
author = {F. R. Pearce and P. A. Thomas and H. M. P. Couchman},
journal= {arXiv preprint arXiv:astro-ph/9310023},
year = {2015}
}
Comments
16 pages, 13 figures upon request, Plain Latex, SUSSEX-AST-PTC-2