Beschreibung
The cosmological bispectrum is a powerful probe of non-Gaussianity, sensitive to both nonlinear structure formation and primordial physics from inflation. However, measuring the bispectrum in large-scale structure surveys is computationally challenging due to its high dimensionality and observational effects.
In this talk I present ongoing work extending the MODAL bispectrum estimator to projected maps of large-scale structure across multiple redshift bins. This approach aims to retain sensitivity to the underlying three-dimensional clustering while suppressing small-scale redshift-space distortions. It also naturally enables cross-correlations with projected observables such as CMB lensing, providing a potential route toward joint CMB–LSS analyses of non-Gaussianity.