Power spectrum accuracy. Left panel: for one particular realization, we plot the difference between the power spectrum of a map convolved with a narrow Gaussian, FWHM = 6′ and the power spectrum of the exact convolution. Right panel: we show the power spectrum of the difference map, computed from the convolution of a map using ARKCoS and the exact solution. For comparison, we also show the expected power spectrum of the exact convolution in both panels (dashed lines). Note that since we are comparing to the exact convolved power spectrum this error measure includes the HEALPix quadrature error.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.