Astrophysics Source Code Library

Making codes discoverable since 1999

Searching for codes credited to 'Pettinari, Guido W.'

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[ascl:1701.012] SONG: Second Order Non-Gaussianity

SONG computes the non-linear evolution of the Universe in order to predict cosmological observables such as the bispectrum of the Cosmic Microwave Background (CMB). More precisely, it is a second-order Boltzmann code, as it solves the Einstein and Boltzmann equations up to second order in the cosmological perturbations.