The derived parameter ranges , particularly for n and B , are strongly correlated . The critical frequency scales as ν c ∝ BT 2 e and sets the spectral peak , while in the one zone model at fixed radius the bolometric luminosity is proportional to the synchrotron emissivity near the peak which scales as j ν ∼ nB 2 T 5/2 e . For the model to produce the observed flux , T e > T b ∼ 6 × 10 10 K where T b is the observed 230 GHz brightness temperature . We see clear correlations as anticipated from the forms of ν c and j ν . In particular , the magnetic field strength is anti - correlated with both the particle density and electron temperature . The spectral shape and our assumed parameter bounds ( particularly β < 10 3 ) provide some additional information , leading to our inferred parameter ranges . Using simultaneous 233 and 868 GHz data leads to better constrained parameter ranges than the same exercise done in von Fellenberg et al . ( 2018 ) . The basic results are otherwise identical .