Observations of the CMB: Planck and beyond
Paolo de Bernardis
Dipartimento di Fisica dell'Università "La Sapienza" di Roma
In the framework of the current cosmological model, precision measurements of
the Cosmic Microwave Background fluctuations represent an effective way to
investigate the early and very early universe.
The Planck satellite, currently working from the Lagrangian point L2 of the
sun-earth system, has demonstrated to operate with an unprecedented combination
of sensitivity, angular resolution, and spectral coverage.
This will allow the best possible separation of foreground radiation and a
clean extraction of small cosmological signals like the polarization of the CMB,
secondary anisotropies, non gaussian fluctuations. Meanwhile, other experiments
are being developed with the mission to reduce systematic effects.
We will describe the status of the Planck mission, focusing on key recent
results, and the custom experimental strategies and new technologies developed
to measure the B-modes of CMB polarization, the Sunyaev-Zel'dovich effect in
clusters of galaxies, and possibly non gaussianity.