Observations of the Polarisation of the Anomalous Microwave Emission: A Review

Figure 8

Contribution of the polarised AME to the (E and B) angular power spectrum at 33 GHz. The solid blue and red lines correspond to the CMB polarisation spectrum of E-modes and B-modes for the WMAP-7 cosmology [103] and assuming a tensor-to-scalar ratio of 𝑟=0.1. Note that for the B-mode spectrum, the primordial tensor and lensing contributions are also plotted separately. The polarised AME power spectra (𝐶^AME_𝑙), for fractional polarisations Π_AME equal to 1.0%, 0.5% and 0.1%, are shown as dashed, dotted-dashed, and dotted-dotted-dashed lines, respectively. For comparison, the synchrotron contribution at this frequency is also shown as a black dotted line.