The tree-level angular bispectrum in real and redshift space is expressed as sums of angular power spectra products, enabling an efficient and validated flat-sky approximation for unequal-time cases.
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Efficient computation of the galaxy angular bispectrum in redshift space
The tree-level angular bispectrum in real and redshift space is expressed as sums of angular power spectra products, enabling an efficient and validated flat-sky approximation for unequal-time cases.