Detecting deviations from Gaussianity in high-redshift CMB lensing maps
Zhuoqi (Jackie) Zhang,
Yuuki Omori,
Chihway Chang
Abstract:While the probability density function (PDF) of the cosmic microwave background (CMB) convergence field approximately follows a Gaussian distribution, primordial non-Gaussianities and small contributions from structures at low redshifts make the overall distribution slightly non-Gaussian. Some of the late-time component can be modelled using the distribution of galaxies and subtracted off from the original CMB lensing map to produce a map of matter distribution at high redshifts. Using this high-redshift mass … Show more
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