{"artifact_id":"L1-368","layer":"L1","title":"Strong Gravitational Lensing Inversion","domain":"Astrophysics","sub_domain":"Gravitational lensing","physics_fingerprint":{"L_DAG":4.2,"title":"Strong Gravitational Lensing Inversion","domain":"Astrophysics","carrier":"photon","primitives":["L.linear_op","S.source.pixelization","O.chi2.image_plane"],"sub_domain":"Gravitational lensing","noise_model":"shot_poisson","problem_class":"nonlinear_inverse","solution_space":"2D_lens_mass_distribution","difficulty_delta":10,"integration_axis":"lens_plane","sensing_mechanism":"gravitational_deflection_mapping"},"observable_profile":{"metric":"image_chi2_reduced","regime":"Existence of the recovered 2D_lens_mass_distribution is guaranteed within the declared Omega bounds. Uniqueness holds on the measurement-supported subspace; out-of-support modes are controlled by declared priors. Stability is conditionally stable (kappa_eff ~= 5000); PSF_mismatch dominates the stability cliff; the remaining mismatch parameters contribute higher-order bias terms. Shot poisson sets the irreducible data-fidelity floor.","secondary":"source_plane_regularization"},"size_tiers":{"center_spec":{"omega":{"H":100,"W":100,"gamma_shear":0.05,"e_ellipticity":0.2,"theta_E_arcsec":1.0},"input_format":"measurement_only","problem_class":"nonlinear_inverse","forward_operator":"gravitational_deflection_mapping","epsilon_fn_center":"1.1 image_chi2_reduced"},"omega_bounds":{"H":[50,500],"W":[50,500],"gamma_shear":[0.0,0.2],"e_ellipticity":[0.0,0.5],"theta_E_arcsec":[0.2,3.0]},"epsilon_bounds":{"image_chi2_reduced":[0.9,3.0]},"allowed_problem_classes":["nonlinear_inverse"],"allowed_omega_dimensions":["H","W","theta_E_arcsec","e_ellipticity","gamma_shear"],"allowed_forward_operators":["gravitational_deflection_mapping"]},"hardness_fn":{"type":"epsilon_fn","delta":10,"kappa":1000000.0,"metric":"image_chi2_reduced"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0x5aaa44ef61f3e528988c3dbc9fec6cd9bb3e57684a35106e8d08a6da2cf84b57","chain_tx_hash":"0x99e3ed8a5c176fbda7d6117d9fa9ac408e30313985a3022e43bc306840ec3ec2","chain_block":41555177}