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Estimating SI violation in CMB due to non-circular beam and complex scan in minutes
Nidhi Pant, Santanu Das, Aditya Rotti +2
Mild, unavoidable deviations from circular-symmetry of instrumental beams along with scan strategy can give rise to measurable Statistical Isotropy (SI) violation in Cosmic Microwa…
Bayesian inference on the sphere beyond statistical isotropy
Santanu Das, Benjamin D. Wandelt, Tarun Souradeep
We present a general method for Bayesian inference of the underlying covariance structure of random fields on a sphere. We employ the Bipolar Spherical Harmonic (BipoSH) representa…
Effect of noncircularity of experimental beam on CMB parameter estimation
Santanu Das, Sanjit Mitra, Sonu Tabitha Paulson
Measurement of Cosmic Microwave Background (CMB) anisotropies has been playing a lead role in precision cosmology by providing some of the tightest constrains on cosmological model…