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Table 2.

Best-fit and marginalized parameter values for the model assuming a power law profile plus external shear.

Component Parameter Best-fit value Marginalized value
x [″] 10.86
y [″] 9.60
q 0.76
Power law θ [rad] 0.58
θE [″] 5.6
rc [″] 0.01
γ 1.7

Shear γext 0.08
ϕext [rad] 3.5

Notes. The parameters x and y are centroid coordinates with respect to the bottom left corner of our cutout, q is the axis ratio, θ is the position angle measured counterclockwise from the x-axis, θE is the Einstein radius, rc is the core radius, γ′ is the slope, γext is the external shear magnitude, and ϕext is the external shear orientation. The constraints for this model are the selected multiple image systems. The best-fit model has an image position χ2 of 12.6.

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