"Second-order Boltzmann code and the CMB bispectrum from recombination"
Zhiqi Huang
Institut Physique Théorique (IPhT), DSM, CEA-Saclay (Gif-sur-Yvette, France)
I will introduce CosmoLib2nd, a numerical Boltzmann code at second-order to compute CMB bispectra on the full sky. We compute the cosmic microwave background temperature bispectrum generated by nonlinearities at recombination on all scales. For cosmic-variance limited data to lmax = 2000, its signal-to-noise is S/N=0.47 and will bias a local signal by (fNL)loc~ 0.82.
Salle des séminaires François Arago,
Institut d'Astrophysique de Paris
