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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 308820.0, MPI für Astronomie / Publikationen_mpia
Combining weak and strong lensing in cluster potential reconstruction
Authors:Cacciato, M.; Bartelmann, M.; Meneghetti, M.; Moscardini, L.
Date of Publication (YYYY-MM-DD):2006
Journal Abbrev.:Astronomy and Astrophysics
Volume:458
Start Page:349
End Page:356
Audience:Not Specified
Abstract / Description:We propose a method for recovering the two-dimensional gravitational potential of galaxy clusters which combines data from weak and strong gravitational lensing. A first estimate of the potential from weak lensing is improved at the approximate locations of critical curves. The method can be fully linearised and does not rely on the existence and identification of multiple images. We use simulations to show that it recovers the surface-mass density profiles and distributions very accurately,even if critical curves are only partially known and if their location is realistically uncertain. We further describe how arcs at different redshifts can be combined, and how deviations from weak lensing can be included.
Free Keywords:gravitational lensing; galaxies: clusters: general; cosmology: theory
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bi...
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