Spherically averaging ellipsoidal galaxy clusters in X-ray and Sunyaev-Zel'dovich studies - II. Biases

This is the second of two papers investigating the spherical averaging of ellipsoidal galaxy clusters in the context of X-ray and Sunyaev-Zel'dovich (SZ) observations. In the present study, we quantify the orientation-average bias and scatter in observables that result from spherically averagin...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2012-04, Vol.421 (2), p.1399-1420
Main Authors: Buote, David A., Humphrey, Philip J.
Format: Article
Language:English
Subjects:
Astrophysics
Bias
Clusters
cosmological parameters
Cosmology
cosmology: observations
dark matter
Galaxies
Mathematical models
Orientation
Scatter
Stars & galaxies
X-rays
X‐rays: galaxies
X‐rays: galaxies: clusters
Yttria stabilized zirconia
Citations: Items that cite this one
Online Access:Get full text
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Summary:This is the second of two papers investigating the spherical averaging of ellipsoidal galaxy clusters in the context of X-ray and Sunyaev-Zel'dovich (SZ) observations. In the present study, we quantify the orientation-average bias and scatter in observables that result from spherically averaging clusters described by either ellipsoidal generalizations of the Navarro-Frenk-White (NFW) profile or a nearly scale-free logarithmic potential. Although the mean biases are small and mostly
ISSN:0035-8711
1365-2966
DOI:10.1111/j.1365-2966.2011.20399.x