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Multitracing anisotropic non-Gaussianity with galaxy shapes

Multitracing anisotropic non-Gaussianity with galaxy shapes

Correlations between intrinsic galaxy shapes on large scales arise due to the effect of the tidal field of the large-scale structure. Anisotropic primordial non-Gaussianity induces a distinct scale-dependent imprint in these tidal alignments on large scales. Motivated by the observational finding that the alignment strength of luminous red galaxies depends …