Weak Lensing Cosmology with LSST: Three-Point Shear Correlations

Details Weak Lensing Cosmology with LSST: Three-Point Shear Correlations Weak Lensing Cosmology with LSST: Three-Point Shear Correlations

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.2635j&link_type=abstract

American Astronomical Society Meeting 207, #26.35; Bulletin of the American Astronomical Society, Vol. 37, p.1208

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Scientific paper

We present an analysis of the three-point correlation function for weak lensing shear data. The shear three-point function is an independent measurement from the two-point function and thus adds to the total signal-to-noise obtainable from weak lensing data. Furthermore, it is shown that the constraints on cosmological parameters are along somewhat different degeneracies than the two-point function, so the combination of the two statistics is significantly more powerful than either one individually. Predictions of the constraining power are given for the proposed Large Synoptic Survey Telescope (LSST). We also present the actual marginal detection from the 75 square degree CTIO Lensing Survey and the E/B mode analysis of this dataset.

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