http://arxiv.org/abs/1806.06325
Cosmic Microwave Background Radiation is characterized by T, Q and U fields. A dipole modulation in these fields has been studied in different contexts. E and B are derived from Q and U fields with the help of the so-called `edth’ operator. In this short write-up, I do a systematic analysis to demonstrate that a dipole modulation in E mode polarization can’t be introduced. Although the analysis has been done for the E mode, a similar exercise can be repeated for B mode as well. It has been explicitly demonstrated that the introduction of a dipole modulation leads to a contradiction and hence such a modulation isn’t allowed.
R. Kothari
Tue, 19 Jun 18
81/91
Comments: N/A