Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.9619d&link_type=abstract
American Astronomical Society, AAS Meeting #211, #96.19; Bulletin of the American Astronomical Society, Vol. 39, p.903
Astronomy and Astrophysics
Astronomy
Scientific paper
Combining weak and strong(W+S) lensing is becoming an important tool
in mass measurements of clusters. Determining mass maps of clusters using W+S analysis can be challenging because of the difference in length scales associated with the different signals. Traditionally researchers have used grid based methods to reconstruct the density fields. In this poster we develop a particle based method that incorporates these two scales without the necessity of regularization. The accuracy of the method is determined by the smoothing scale used.
We apply the particle based method to do mass reconstruction using ellipticities only. This can be easily generalized to include strong lensing information as well. There are also complexities with images in the semi-strong or semi-weak regimes which are resolved by smoothing the ellipticity function. We apply these techniques to a number of test cases and find excellent agreement between the reconstructed and input mass distribution.
Deb Sanghamitra
Goldberg David M.
Ramdass Vede J.
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