Description
In the recent years it has become clear how the contamination coming from Galactic and extra-Galactic emissions represents one of the main limiting factor for any new science achievable with Cosmic Microwave Background observations. Having a thorough understanding of the foreground properties is therefore fundamental in order to achieve a reliable reconstruction of the clean CMB signal and to constrain its cosmological properties. In this talk I will review the current status of knowledge and characterization of foregrounds, focusing in particular Galactic polarized emission. I will summarize the main results from the latest analysis of available multi-frequency data, highlighting which are the main limitations in our current models and how we can overcome them in view of future CMB experiments.
