Simple models for the distribution of dark matter

Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK e-mail: [jin;nwe]@ast.cam.ac.uk

Received: 17 June 2005
Accepted: 17 August 2005

Abstract

We introduce a simple family of models for representing the dark matter in galaxies. The potential and phase space distribution function are all elementary, while the density is cusped. The models are all hypervirial, that is, the virial theorem holds locally, as well as globally. As an application to dark matter studies, we compute some of the properties of γ-ray sources caused by neutralino self-annihilation in dark matter clumps.