[26.35] Weak Lensing Cosmology with LSST: Three-Point Shear Correlations

AAS 207th Meeting, 8-12 January 2006
Session 26 LSST
Poster, Monday, 9:20am-7:00pm, January 9, 2006, Exhibit Hall

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[26.35] Weak Lensing Cosmology with LSST: Three-Point Shear Correlations

M. Jarvis (U. Penn), M. Takada (Tohoku U.), B. Jain, G. Bernstein (U. Penn)

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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