Realistic Analytical Dynamical Models for Galaxies and Dark Matter Haloes

Details Realistic Analytical Dynamical Models for Galaxies and Dark Matter Haloes Realistic Analytical Dynamical Models for Galaxies and Dark Matter Haloes

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jena.confe..60b&link_type=abstract

"JENAM-2007, "Our non-stable Universe", held 20-25 August 2007 in Yerevan, Armenia. Abstract book, p. 60-60"

Computer Science

Scientific paper

Both numerical simulations and observational evidence indicate that the outer regions of galaxies and dark matter haloes are typically mildly to significantly radially anisotropic. The inner regions can be significantly non-isotropic, depending on the dynamical formation and evolution processes. In an attempt to break the lack of simple dynamical models that can reproduce this behaviour, we have developed a technique to construct dynamical models with an arbitrary density and an arbitrary anisotropy profile. We present families of completely analytical Plummer and Hernquist models in which the anisotropy at small and large radii can be chosen as free parameters. We also apply our technique to fully investigate the phase space structure of dark matter haloes with dynamical properties as derived in N-body simulations.

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