Maximum-likelihood cluster reconstruction

Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)); Narayan, R. (Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)); Seitz, S.; Schneider, P. (Max-Planck-Institut fuer Astrophysik, Garching (Germany)); Bartelmann, M. (Max-Planck-Institut fuer Astrophysik, Garching (Germany); Max-Planck-Institut fuer Astrophysik, Garching (Germany)

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Maximum-likelihood cluster reconstruction

Authors: Cambridge, MA (United States)) Harvard-Smithsonian Center for Astrophysics
R. (Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)) Narayan
S. Seitz
P. (Max-Planck-Institut fuer Astrophysik, Garching (Germany)) Schneider
M. (Max-Planck-Institut fuer Astrophysik, Garching (Germany) Bartelmann
Garching (Germany) Max-Planck-Institut fuer Astrophysik
Publication date: 1 January 1996
Publisher
Doi

Abstract

We present a novel method to reconstruct the mass distribution of galaxy clusters from their gravitational lens effect on background galaxies. The method is based on a least-_#chi#"2 fit of the two-dimensional gravitational cluster potential. The method combines information from shear and magnification by the cluster lens and is designed to easily incorporate possible additional information. We describe the technique and demonstrate its feasibility with simulated data. Both the cluster morphology and the total cluster mass are well reproduced. (orig.)Available from TIB Hannover: RR 4697(914) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

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