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Table A.2.

Spectral index measured with VLBI data.

IC name Source ν Speak uv-range Beam α
(GHz) (mJy beam−1) Mλ mas×mas,°
(1) (2) (3) (4) (5) (6) (7)
190704A NVSS J104938+274212 1.5 2.9±0.3 2-40 6.6×5.6, 67.0 0.7±0.1
4.4 5.9±0.6

4.4 3.8±0.4 5-100 2.8×1.7, −5.3 0.0±0.3
7.6 3.8±0.4

200109A WISEA J105553.74+103446.5 4.9 16.3±1.7 4-155 2.6×1.9, 0.8 −1.4±0.3
8.4 7.8±0.9

201114A WISEA J065633.43+053922.7 4.9 25.1±2.5 13-144 1.5×1.1, 6.4 1.8±0.3
8.4 67.6±6.8

8.4 66.6±6.6 13-244 1.4×0.9, 0.9 −0.3±0.1
23.5 49.1±4.9

NVSS J065916+055252 4.9 421±42 8-165 2.2×1.2, −7.5 −0.4±0.3
8.4 520±52

8.4 385±39 12-245 1.6×0.9, −15.0 −0.9±0.1
23.5 154±15

Notes: Col. 1 - IceCube event name; Col. 2 - candidate neutrino counterpart; Col. 3 - observation frequency in GHz; Col. 4 - peak intensity in mJy beam−1; Col. 5 - uv-range in Mλ; Col. 6 - beam sizes; Col. 7 - spectral index.

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