Marginal and joint posterior distributions for the minimum magnetic field strength B and the plasma particle density n for a LALO with period P = 60 ± 10 min under model M₁ given by Equation (4). The left panels are the results obtained with uniform priors, 𝒰(B [G]; 1, 100) and 𝒰(n [cm⁻³]; 10⁹, 10¹¹) (blue-dotted lines). The right panels are the results obtained with 𝒰(B [G]; 1, 100) and a Gaussian prior on particle density, 𝒢(n [cm⁻³]; μ_n, σ_n) (red dotted lines), with μ_n = 10¹⁰ cm⁻³ and σ_n = 0.2μ_n. The top and middle panels show the marginal posteriors, and the bottom panels show the joint posteriors, with the white line enclosing the 68% credible interval. For the magnetic field strength, the median and upper bounds at the 68% credible intervals are $B={19}_{-6}^{+5}$ G for the uniform priors and $B=8_{-1}^{+1}$ G for the Gaussian prior on density. Solutions computed over a 2D grid with N_n = N_B = 800 points.