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Fig. 5

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Circularly polarised fraction of V-LoTSS sources as a function of signal-to-noise ratio in Stokes I (left panel) and Stokes V (middle panel). We colour each source by its association with a known object class, as outlined in Sect. 3.2. This includes stars (red circles), pulsars (yellow squares), AGN (blue rightward pointing triangles), and brown dwarfs (brown diamonds). Sources that have no known association in the literature are represented by black triangles. The histogram (right panel) shows the distribution of the circularly polarised fraction for sources associated with stars (red line) and pulsars (yellow line), with the median of both of those distributions presented as dashed lines in their respective colours. The uncertainties on the circularly polarised fraction are smaller than the size of the symbol unless otherwise plotted.

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