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Table 9.

Estimated directions (RA,Dec) and amplitudes (d) of the cosmic radio dipole for a given survey with masks and flux density thresholds (S).

Survey Mask fsky S S1.4 N RA Dec Δθ d χ2/d.o.f.
(mJy) (mJy) (deg) (deg) (deg) ( × 10−2)
50 9 393 447 124.53 ± 4.13 25.66 ± 5.15 53.30 ± 4.02 6.6 ± 0.5 3.19
100 18 244 881 135.61 ± 11.57 15.90 ± 11.24 39.33 ± 14.30 6.0 ± 0.8 2.91
d 0.72 150 28 173 964 139.53 ± 11.33 12.88 ± 10.74 34.50 ± 13.86 5.9 ± 0.7 1.83
200 37 133 547 141.99 ± 11.17 11.52 ± 10.21 31.74 ± 13.29 5.9 ± 0.7 1.65
TGSS
50 9 296 855 132.90 ± 4.57 15.68 ± 5.21 41.43 ± 4.17 6.2 ± 0.5 2.36
100 18 179 951 137.25 ± 6.62 14.49 ± 5.39 37.23 ± 6.05 6.3 ± 0.6 1.94
n 0.52 150 28 127 244 138.30 ± 6.25 14.96 ± 5.25 36.65 ± 5.63 6.5 ± 0.7 1.72
200 37 97 355 138.86 ± 6.12 15.79 ± 5.51 36.69 ± 5.45 6.8 ± 0.8 1.54
25 8 115 808 143.34 ± 19.48 −13.15 ± 4.58 24.99 ± 13.84 3.2 ± 1.0 1.91
35 12 95 302 137.85 ± 24.47 −13.29 ± 4.98 30.27 ± 18.99 2.9 ± 0.9 1.77
d 0.17 45 15 81 534 131.83 ± 27.76 −11.95 ± 6.28 35.94 ± 22.94 2.8 ± 0.9 1.68
55 18 71 643 127.51 ± 29.27 −10.70 ± 6.59 40.10 ± 24.89 2.8 ± 0.9 1.57
WENSS
25 8 93 577 142.20 ± 23.25 −16.20 ± 5.77 26.83 ± 14.94 3.1 ± 0.9 1.88
35 12 76 760 138.98 ± 27.58 −16.25 ± 6.16 29.81 ± 18.54 2.9 ± 0.9 1.75
n 0.14 45 15 65 494 138.71 ± 34.24 −16.23 ± 7.66 30.06 ± 23.10 2.8 ± 1.0 1.67
55 18 57 463 135.43 ± 35.16 −15.39 ± 7.60 32.95 ± 24.13 2.8 ± 1.0 1.56
18 12 99 835 106.67 ± 12.90 −9.50 ± 11.12 60.62 ± 12.49 3.8 ± 0.9 1.49
25 17 75 642 106.18 ± 16.99 −5.11 ± 9.91 61.40 ± 16.79 3.5 ± 1.0 1.58
d 0.16 35 24 55 973 108.05 ± 22.64 −4.12 ± 8.92 59.65 ± 20.85 3.4 ± 1.0 1.49
45 31 44 403 105.33 ± 25.64 −4.08 ± 8.35 62.35 ± 23.73 3.3 ± 1.1 1.51
55 38 36 646 106.72 ± 33.92 −4.92 ± 8.66 60.89 ± 27.50 3.2 ± 1.1 1.40
SUMSS
18 12 96 816 106.67 ± 14.53 −9.50 ± 10.03 59.40 ± 14.36 3.8 ± 0.8 1.51
25 17 73 356 106.18 ± 17.34 −5.11 ± 8.95 61.16 ± 17.28 3.5 ± 1.0 1.60
n 0.16 35 24 54 336 108.05 ± 20.78 −4.12 ± 8.16 61.24 ± 20.09 3.4 ± 1.1 1.51
45 31 43 121 105.33 ± 24.68 −4.08 ± 7.93 63.50 ± 23.62 3.3 ± 1.1 1.46
55 38 35 574 106.72 ± 30.58 −4.92 ± 8.68 61.60 ± 25.75 3.2 ± 1.2 1.41
15 – 328 207 138.90 ± 12.02 −2.74 ± 12.11 29.23 ± 11.07 1.6 ± 0.3 1.30
25 – 209 034 140.02 ± 13.63 −5.14 ± 13.26 27.82 ± 12.17 1.8 ± 0.4 1.23
d 0.66 35 – 151 702 140.51 ± 14.14 −8.32 ± 14.52 27.22 ± 12.61 1.8 ± 0.4 1.23
45 – 117 617 140.67 ± 14.68 −13.01 ± 16.15 27.52 ± 12.65 2.0 ± 0.6 1.24
55 – 95 129 143.86 ± 17.03 −16.45 ± 17.38 25.39 ± 12.76 2.1 ± 0.6 1.23
NVSS
15 – 266 839 156.33 ± 17.80 7.41 ± 17.63 18.44 ± 15.16 1.4 ± 0.4 1.18
25 – 169 752 161.02 ± 17.37 2.69 ± 17.12 11.86 ± 13.94 1.6 ± 0.4 1.10
n 0.53 35 – 123 037 165.14 ± 18.88 −1.84 ± 18.82 5.82 ± 13.65 1.6 ± 0.5 1.13
45 – 95 291 169.15 ± 19.40 −5.99 ± 19.29 1.54 ± 13.05 1.8 ± 0.5 1.10
55 – 77 081 173.60 ± 21.09 −9.18 ± 19.47 6.03 ± 13.47 2.0 ± 0.6 1.10

Notes. We also show the resulting number of sources (N) and the directional offset (Δθ) to the fiducial kinematic dipole of the CMB, as well as χ2/d.o.f. of the fit. Errors are estimated from 100 bootstraps for each sample. To ease comparisons across frequencies we also include scaled flux density thresholds, at a reference frequency of 1.4 GHz (S1.4), assuming a universal power-law spectrum with α = 0.75.

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