Table 4.
Summary of VLBI observations.
| IC event | Target | Date | Code | Array | ν | tobs | Antennas |
|---|---|---|---|---|---|---|---|
| (GHz) | (min) | ||||||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) |
| 190704A | 1WHSP J104516.2+275133 | 18+22 Jul 2019 | BG261 | VLBA | 1.5 | 14+13 | 9 (−Sc) |
| 4.4 | 9+8 | ||||||
| 7.6 | 9+8 | ||||||
| 8.4 | 17+18 | ||||||
| 17 Jan 2020 | BA133 | VLBA | 4.7 | 175 | 9 (−Kp) | ||
| 7.6 | 175 | ||||||
| NVSS J104938+274212 | 18+22 Jul 2019 | BG261 | VLBA | 1.5 | 13+14 | ||
| 4.4 | 8+9 | ||||||
| 7.6 | 9+9 | ||||||
| 200109A | TXS 1100+122 | 29 Feb 2020 | RG011 | EVN | 4.9 | 525 | 13 |
| 04 Feb 2020 | BG263 | VLBA | 8.4 | 60 | 10 | ||
| 23.5 | 270 | ||||||
| WISEA J111439.67+122503.7-A | 29 Feb 2020 | RG011 | EVN | 4.9 | 34 | ||
| WISEA J111439.67+122503.7-B | 4.9 | 34 | |||||
| WISEA J111439.67+122503.7 | 04 Feb 2020 | BG263 | VLBA | 8.4 | 14 | ||
| 23.5 | 36 | ||||||
| WISEA J105553.74+103446.5 | 29 Feb 2020 | RG011 | EVN | 4.9 | 33 | ||
| 04 Feb 2020 | BG263 | VLBA | 8.4 | 14 | |||
| 23.5 | 36 | ||||||
| 201021A | 1RXS J172314.4+142103 | 05 Nov 2020 | DD10006 | e-MERLIN | 5.1 | 486 | 6 |
| PKS 1725+123 | 155 | ||||||
| 201114A | NVSS J065844+063711 | 01+02 Dec 2020 | EG108 | EVN | 4.9 | 328 | 16 |
| 06 Dec 2020 | BG264A | VLBA | 8.4 | 72 | 9 (−Hn) | ||
| 23.5 | 198 | ||||||
| WISEA J065633.43+053922.7 | 01+02 Dec 2020 | EG108 | EVN | 4.9 | 20 | ||
| 06 Dec 2020 | BG264A | VLBA | 8.4 | 18 | |||
| 23.5 | 46 | ||||||
| NVSS J065916+055252 | 01+02 Dec 2020 | EG108 | EVN | 4.9 | 252 | ||
| 06 Dec 2020 | BG264A | VLBA | 8.4 | 43 | |||
| 23.5 | 139 | ||||||
Notes. Column 1: IceCube event name; Col. 2: candidate neutrino counterpart; Col. 3: date of observation; Col. 4: project code; Col. 5: instrument; Col. 6: observation frequency in GHz; Col. 7: on-source time in minutes; Col. 8: number of antennas used in the observations. We report in brackets which antenna was not operating during VLBA experiments. VLBA telescopes are Saint Croix (Sc), Kitt Peak (Kp), Hancock (Hn), Mauna Kea, Brewster, Owens Valley, Pie Town, Los Alamos, Fort Davis, and North Liberty. The EVN telescopes partecipating in the observations are Jodrell Bank (Jb), Onsala (O8), Tianma (T6), Nanshan (Ur), Torun (Tr), Yebes (Ys), Svetloe (Sv), Zelenchukskaya (Zc), Badary (Bd), Irbene (Ir), Westerbork (Wb), Effelsberg (Ef), Medicina (Mc), Noto (Nt), and Hartebeesthoek (Hn). In particular, the RG011 project is performed with Jb, O8, T6, Ur, Tr, Ys, Sv, Zc, Bd, Ir, Wb, Ef, and Hh; the EG108 project is performed with Jb, Wb, Ef, Mc, Nt, O8, T6, Tr, Ys, Hn, Sv, Zc, Bd, Ir, and the e-MERLIN stations Cambridge (Cm), Darnhall (Da), Defford (De), Knockin (Kn) and Pickmere (Pi).
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