Astronomy & Astrophysics

Table 1: Total observing time $t_{\rm obs}$ , fraction of observing time of III Zw 2 at 43 GHz f₄₃ and 15 GHz f₁₅, and fraction of observing time of phase-reference quasar $f_{\rm quasar}$ for the VLBA observations.
Table 2: Fitting information: the slopes of the linear rise ( $a_{\rm r}$ ) and decay ( $a_{\rm d}$ ), the exponential rise and decay timescales $\tau _{\rm r}$ and $\tau _{\rm d}$ , and the epoch of the flare maximum t₀.
Table 3: Flux densities S, separation D, and position angle PA of the two outermost point-like components of our model-fits to the 43 GHz uv-data.
Table 4: Flux densities S, separation D, and position angle PA of the two point-like components of our model-fits to the 15 GHz uv-data.