config: add prior defaults for ExternalPotential#423
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Adds the missing library-default prior YAML for `ag.mp.ExternalPotential` (added in #422) so `af.Model(ag.mp.ExternalPotential)` resolves without a config error. centre uses Gaussian(0, 0.1) matching Isothermal/MassSheet; the six gamma/tau/delta components use Uniform(-0.3, 0.3) with Absolute width_modifier 0.05 (mirrors ExternalShear's gamma priors). Follow-up to #419 / #422. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
Follow-up to #422. Adds the missing library-default prior YAML for
ag.mp.ExternalPotentialsoaf.Model(ag.mp.ExternalPotential)resolves without a config error.centre_0,centre_1:Gaussian(0, 0.1)— matchesIsothermalandMassSheetconventions.gamma_1,gamma_2,tau_1,tau_2,delta_1,delta_2:Uniform(-0.3, 0.3)withAbsolutewidth_modifier0.05— mirrorsExternalShear's gamma priors.Verified locally:
af.Model(ag.mp.ExternalPotential)builds an 8-parameter (centre + 6 components —ell_compsare fixed (0,0) so excluded from priors) model with all medians at 0 as expected.API Changes
None — config-only addition. See full details below.
Test Plan
python -c "import autofit as af, autogalaxy as ag; af.Model(ag.mp.ExternalPotential).instance_from_prior_medians()"returns the class with all priors resolved.Full API Changes (for automation & release notes)
Added
autogalaxy/config/priors/mass/sheets/external_potential.yaml— library default priors forExternalPotential.Changed
None.
Removed
None.
Migration
None — workspace clones that want different priors can shadow this file with their own
config/priors/mass/sheets/external_potential.yaml.🤖 Generated with Claude Code