The Impact of Polarized Extragalactic Radio Sources on the Detection of CMB Anisotropies in Polarization

Table 2

Median and mean of the fractional polarization and ⟨Π²⟩^1/2 from the Sajina et al. [50] sample. For flat-spectrum sources we consider only objects with 𝑆≥80 mJy. Median values in brackets are computed by assigning a value of Π<1% to sources without a detection in polarization.

			Flat-spectrum sources
𝜈[GHz]	𝑁sou	𝑁det	Πmed		⟨Π⟩	⟨Π^2⟩^1/2
4.86	56	54	2.16		2.47	2.97
8.46	56	55	2.25		2.61	3.10
22.46	56	44	3.12	(2.88)	3.79	4.21
43.34	50	33	4.14	(2.64)	4.85	5.79
			Steep-spectrum sources
4.86	45	44	2.56		4.10	5.79
8.46	45	44	3.48		4.67	5.97
22.46	44	25	6.14	(3.40)	7.17	8.03
43.34	28	11	6.77		7.18	8.30