Direct X-ray Spectral Deprojection of Galaxy Clusters

Helen Russell, Institute of Astronomy, University of Cambridge

Deprojected temperature, density and abundance profiles of the hot intracluster medium (ICM) are important tools for studying the complex interactions of gravitational and feedback processes in the cores of galaxy clusters. Analysis of X-ray data has shown that methods such as projct can produce large and unphysical oscillating temperature profiles. Here we present and validate a new deprojection routine, Direct Spectral Deprojection (DSDeproj; Sanders & Fabian 2007), showing that it solves some of the issues inherent to model-dependent deprojection routines. DSDeproj is a model independent approach, assuming only spherical symmetry, which subtracts projected spectra from each successive annulus to produce a set of deprojected spectra.