A distance measurement for blazar TXS 0506+056 using its radio variability and very long baseline interferometry images

Open Access

Fig. 6.

Log-linear fit to the VLBA C0 light curve from MJD 58230 to MJD 58895 and given quiescent flux density F_qs = 0.164 Jy. The fitting function is $S (t) - F_{qs} = F_{0} exp (\frac{t - t_{0}}{τ})$ $S(t)-F_{\mathrm{qs}}=F_{0}\exp\left(\frac{t-t_{0}}{\tau}\right)$ . The reference time t₀, the reference flux density F₀, the standard e-folding timescale τ, χ², and the quiescent flux density F_qs are noted in the upper right corner.

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