Browsing by Author "Park, C"

Now showing items 8-11 of 11

Primordial non-Gaussian signatures in CMB polarization

Vidhya, G; Pravabati, C; Yogendran, K. P; Park, C (IOP Publishing, 2015-02)

We study the signatures of local type primordial non-Gaussianity, parametrized by fNL, of scalar perturbations in CMB polarization using the probability distribution functions, Minkowski Functionals and Betti numbers. We ...
Residual foreground contamination in the WMAP data

Pravabati, C; Park, C (IOP Publishing, 2014)

We have studied whether there is any residual foreground contamination in the foreground reduced WMAP-7 data for the differential assemblies (DAs) Q, V and W. We have calculated the correlation between the foreground map, ...
Residual foreground contamination in the WMAP data and bias in non-Gaussianity estimation

Pravabati, C; Park, C (IOP Publishing, 2013-02)

We analyze whether there is any residual foreground contamination in the cleaned WMAP 7 years data for the differential assemblies, Q, V and W. We calculate the correlation between the foreground map, from which long ...
Tensor Minkowski Functionals for random fields on the sphere

Pravabati, C; Yogendran, K. P; Joby, P. K; Vidhya, G; Appleby, S; Park, C (IOP Publishing, 2017-12)

We generalize the translation invariant tensor-valued Minkowski Functionals which are defined on two-dimensional flat space to the unit sphere. We apply them to level sets of random fields. The contours enclosing ...

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