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Title:
Direct X-ray spectral deprojection of galaxy clusters
Authors:
Russell, H. R.; Sanders, J. S.; Fabian, A. C.
Affiliation:
AA(Institute of Astronomy, Madingley Road, Cambridge CB3 0HA; ), AB(Institute of Astronomy, Madingley Road, Cambridge CB3 0HA; ), AC(Institute of Astronomy, Madingley Road, Cambridge CB3 0HA; )
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 390, Issue 3, pp. 1207-1216. (MNRAS Homepage)
Publication Date:
11/2008
Origin:
MNRAS
MNRAS Keywords:
galaxies: clusters: general , cooling flows , intergalactic medium , X-rays: galaxies: clusters
DOI:
10.1111/j.1365-2966.2008.13823.x
Bibliographic Code:
2008MNRAS.390.1207R

Abstract

Temperature, density and abundance profiles of the hot intracluster medium (ICM) are important diagnostics of the complex interactions of gravitational and feedback processes in the cores of galaxy clusters. Deprojection of X-ray data by methods such as PROJCT, which are model dependent, can produce large and unphysical oscillating temperature profiles. Here, we validate a deprojection routine, Direct Spectral Deprojection (DSDEPROJ), 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.
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