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Table 1

VLA and VLBI observations of VHS 1256–1257.

Telescope/configuration Epoch Frequency band UT range Beam size PA rms Peak
[°] [μJy] [μJy]
VLA/BnA 15 May 2015 X 05:10–06:10 0.78′′× 0.45′′ −51 3 60
VLA/B 28 Jul 2016 L 00:00–01:00 5.66′′× 3.38′′ −12 7 <21
EVNa 4 Mar 2016 L 22:30–04:30 3.1 × 2.4 mas −64 22 <66
" 27 May 2016 " 15:30–23:30 11.9 × 2.2 mas −78 30 <90
" 2 Nov 2016 " 05:00–13:00 3.2 × 2.3 mas −73 31 <93

Notes. (a) European VLBI Network using the following antennas: Jodrell Bank, Westerbork, Effelsberg, Medicina, Noto, Onsala85, Tianma65, Urumqi, Torun, Zelenchukskaya, Hartebeesthoek, Sardinia, Irbene, and DSS63.

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