Planck early results
Free Access

Fig.2

thumbnail

Plots showing the results of the Monte-Carlo analysis at 30GHz with the PwS algorithm. The upper two rows shows the results when the flux density of sources is from FLUXDET while the lower two rows shows the results when the flux density of sources is from FLUX. The set of 3 plots in the top-left and bottom-left corner show the all-sky flux-density uncertainty, differential reliability and differential completeness of the Monte-Carlo sources as a function of SNR where signal may be FLUX or FLUXDET and the noise is the background RMS. The set of four plots at the top right and bottom right show (left to right, top to bottom) the fractional flux density uncertainty, (Sin − Sout)/Sin (see Sect. 5.1), the distribution of the absolute positional offset, differential positional offset, as well as completeness and contamination (1-reliability converted to a percentage) as a function of flux density for the half of the sky with the lowest sky background RMS. The range of sky background RMS converted to a point source flux density uncertainty, is shown in the inset in mJy. The primary source selections in the catalogues are based on the reliability vs output flux density/background RMS plots such that the cumulative reliability (integral of the differential reliability) is greater than 90%.

This figure is made of several images, please see below:

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.