2009

B-mode Detection with an Extended Planck Mission

Efstathiou, George, Gratton, Steven

Understand

The Planck satellite has a nominal mission lifetime of 14 months allowing two complete surveys of the sky.

Here we investigate the potential of an extended Planck mission of four sky surveys to constrain primordial B-mode anisotropies in the presence of dominant Galactic polarized foreground emission.
An extended Planck mission is capable of powerful constraints on primordial B-modes at low multipoles, which cannot be probed by ground based or sub-orbital experiments.
A tensor-scalar ratio of r=0.05 can be detected at a high significance level by an extended Planck mission and it should be possible to set a 95% upper limit on r of 0.03 if the tensor-scalar ratio is vanishingly small.

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