DR. PAVAN KUMAR ALURI

Dipole temperature anisotropy generated due to our motion relative to CMB rest frame has a well measured amplitude and direction . In addition to this dipole anisotropy, our motion also modulates and aberrates CMB anisotropies, that induces off-diagonal correlations in the two-point function that is otherwise diagonal. These subtle correlations can be used to make an independent measurement of the velocity of our local motion. However, certain regions of the observed CMB sky needs to be eliminated (masked) to avoid residual contamination, still present after cleaning the raw data. But, this omission leads to additional complications. We present a procedure, based on bipolar spherical harmonic (BipoSH) formalism, to consistently recover the signal of our local motion from partial sky data. This procedure is generic, and can be applied to recover any hidden signals of statistical anisotropy from observed CMB maps.