Abstract We reconstruct the history of reionization using Gaussian process regression. Using UV luminosity data compilation from Hubble Frontiers Fields we redshift evolution density and thereby source term in ionization equation. This model-independent reconstruction rules out single power-law but supports logarithmic double parameterization. obtain by integrating equations with reconstructed ...

Many approaches to astronomical data reduction and analysis cannot tolerate missing data: corrupted pixels must first have their values imputed. This paper presents astrofix, a robust flexible image imputation algorithm based on Gaussian process regression. Through an optimization process, astrofix chooses applies different interpolation kernel each image, using training set extracted automatic...