Detection of relic gravitational waves in the CMB: Prospects for CMBPol mission

Details Detection of relic gravitational waves in the CMB: Prospects for CMBPol mission Detection of relic gravitational waves in the CMB: Prospects for CMBPol mission

2011-02-24

arxiv.org/abs/1102.4908v1

JCAP 1103:007,2011

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

26 pages, 19 figures, 4 tables; JCAP in press

Scientific paper

10.1088/1475-7516/2011/03/007

Detection of relic gravitational waves, through their imprint in the cosmic microwave background radiation, is one of the most important tasks for the planned CMBPol mission. In the simplest viable theoretical models the gravitational wave background is characterized by two parameters, the tensor-to-scalar ratio $r$ and the tensor spectral index $n_t$. In this paper, we analyze the potential joint constraints on these two parameters, $r$ and $n_t$, using the potential observations of the CMBPol mission, which is expected to detect the relic gravitational waves if $r\gtrsim0.001$. The influence of the contaminations, including cosmic weak lensing, various foreground emissions, and systematical errors, is discussed.

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