Cluster Mass Reconstruction by a Weak Shear Field
Astrophysics
2016-08-30 v2
Abstract
The tidal gravitational field of galaxy clusters causes a coherent distortion of the images of background sources. Since the distribution of image distortions, namely the shear field, traces the local gravitational potential of a deflector, it can be used to reconstruct the two-dimensional mass distribution of clusters of galaxies. Moreover, the shear field can provide unique information on the redshift distribution of high-redshift galaxies. In this review we summarize recently-developed parameter-free methods of cluster-mass reconstruction based on the shear field, and we apply a mass-reconstruction method to the cluster Abell 370 at redshift 0.375.
Cite
@article{arxiv.astro-ph/0004400,
title = {Cluster Mass Reconstruction by a Weak Shear Field},
author = {Keiichi Umetsu and Masashi Tada and Toshifumi Futamase},
journal= {arXiv preprint arXiv:astro-ph/0004400},
year = {2016}
}
Comments
32 pages, 6 figures