Fig. 1
Surface density of the NVSS source catalogue in galactic coordinates in Mollweide projection, shown at healpix resolution Nside = 32. The colour bar shows the surface density in units of number of objects per square degree. Here we include all objects contained in the catalogue. The white dots indicate the the positions of the celestial poles.
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.