Cluster mass reconstruction by a weak shear field

Keiichi Umetsu, Masashi Tada, Toshifumi Futamase

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)53-84
Number of pages32
JournalProgress of Theoretical Physics Supplement
Issue number133
Publication statusPublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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