Orateur
Malcolm Landais
(Laboratoire Astroparticule & Cosmology)
Description
In this presentation, I will introduce a generalized map-based component-separation framework that accounts for instrumental polarization angle miscalibrations and propagates calibration prior information into cosmological parameter inference.
This framework is being developed as an extension of the Megatop pipeline, a code designed to probe primordial B modes in the context of the Simons Observatory. It enables the joint inference of the tensor-to-scalar ratio (r), the amplitude of lensing-induced B modes, and the isotropic cosmic birefringence angle.
Finally, I will present forecasts for cross-experiment calibration and constraints on isotropic cosmic birefringence using Simons Observatory alone and in combination with LiteBIRD.
Auteur
Malcolm Landais
(Laboratoire Astroparticule & Cosmology)