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Effects and uses of CMB lensing

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Zoom link: https://zoom.us/j/99304579109

Large-scale structure gravitationally lenses the cosmic microwave background, producing magnification, shear and rotation effects. I describe some useful and surprising effects of this, including new optimized measurements from Planck PR4 maps, lensing biases induced via masking, and how the small rotation effect may be observable using forthcoming CMB observations.

This talk is part of the Cosmology Lunch series.

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