Journal Article

Direct X-ray spectral deprojection of galaxy clusters

H. R. Russell, J. S. Sanders and A. C. Fabian

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 390, issue 3, pages 1207-1216
Published in print November 2008 | ISSN: 0035-8711
Published online October 2008 | e-ISSN: 1365-2966 | DOI:
Direct X-ray spectral deprojection of galaxy clusters

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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.

Keywords: galaxies: clusters: general; cooling flows; intergalactic medium; X-rays: galaxies: clusters

Journal Article.  6502 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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