Canny Algorithm: A New Estimator for Primordial Non-Gaussianities
Danos, Rebecca J. · Frey, Andrew R. · Wang, Yi
Original · EN
We utilize the Canny edge detection algorithm as an estimator for primordial non-Gaussianities. In preliminary tests on simulated sky patches with a window size of 57 degrees and multipole moments l up to 1024, we find a 3σ distinction between maps with local non-Gaussianity fNL=350 (or fNL=-700) and Gaussian maps. We present evidence that high resolution CMB studies will strongly enhance the sensitivity of the Canny algorithm to non-Gaussianity, making it a promising technique to estimate primordial non-Gaussianity.
English translation
This paper has no Arabic translation yet. Be the first: it takes a few seconds, and the result is stored for every future reader.