{
  "generated": "2026-05-21T00:16:05.606Z",
  "bssn_gauge_wave": {
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        "nx": 24,
        "ny": 24,
        "nz": 24,
        "box_length": 1,
        "n_steps": 60,
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        "ny": 32,
        "nz": 32,
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        "n_steps": 60,
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        "initial_data": "gauge_wave",
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      "iters": 6,
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      "final_mom_l2": 0.005989609554007766,
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      "regulator_fires": 0,
      "snapshots": [
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          "regulator_fires": 0
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          "regulator_fires": 0
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          "regulator_fires": 0
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          "time": 0.46642368291093245,
          "ham_l2": 0.0495591318938251,
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          "alpha_min": 0.9949874368832986,
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          "regulator_fires": 0
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      "trust": "PRECISE"
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  },
  "bssn_convergence": {
    "method": "self-convergence in alpha at final step, log2 ratio of L2 differences",
    "reference": "wasm/tests/bssn_convergence.rs:91-164 (4th-order FD spatial, RK4 time)",
    "expected_order": "asymptotic p = 4 for clean RK4 + 4th-order FD; observed 3.0-3.8 typical on Cartesian gauge wave (Alcubierre 2008 ch.5; Apples-with-Apples 2004)",
    "measured": {
      "note": "alpha_slice_x not returned in snapshot - using ham_l2 ratio as proxy",
      "proxy_ham_l2_ratios": {
        "ham(16)/ham(24)": 5.150903957480216,
        "ham(24)/ham(32)": 3.062096588511983
      }
    }
  },
  "minkowski_floor": {
    "description": "Flat-spacetime fixed-point test. Per wasm/tests/bssn_validation.rs:42-43, ham_l2 should remain below 1e-6 for the duration.",
    "request": {
      "nx": 16,
      "ny": 16,
      "nz": 16,
      "box_length": 1,
      "n_steps": 50,
      "snapshot_interval": 10,
      "initial_data": "minkowski",
      "gauge": "one_plus_log",
      "cfl": 0.25,
      "epsilon_ko": 0.1,
      "damping": 0.02,
      "formulation": "bssn",
      "eta_shift": 2
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    "wall_ms": 6722,
    "final_ham_l2": 1.166967424641463e-28,
    "final_ham_max": 1.1669674246414925e-28,
    "final_mom_l2": 8.588029759206712e-31,
    "test_pass": true,
    "snapshots": [
      {
        "step": 0,
        "time": 0,
        "ham_l2": 0,
        "ham_max": 0,
        "mom_l2": 0
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      {
        "step": 10,
        "time": 0.15625,
        "ham_l2": 4.677574162886289e-30,
        "ham_max": 4.677574162886517e-30,
        "mom_l2": 3.371000189970449e-47
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      {
        "step": 20,
        "time": 0.3125,
        "ham_l2": 1.8700569449523902e-29,
        "ham_max": 1.8700569449524432e-29,
        "mom_l2": 2.14700743980152e-31
      },
      {
        "step": 30,
        "time": 0.46875,
        "ham_l2": 4.205442920603674e-29,
        "ham_max": 4.2054429206035206e-29,
        "mom_l2": 4.29401487960304e-31
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      {
        "step": 40,
        "time": 0.625,
        "ham_l2": 7.472464219707788e-29,
        "ham_max": 7.47246421970804e-29,
        "mom_l2": 1.2882044638810142e-30
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      {
        "step": 50,
        "time": 0.78125,
        "ham_l2": 1.166967424641463e-28,
        "ham_max": 1.1669674246414925e-28,
        "mom_l2": 8.588029759206712e-31
      }
    ],
    "trust": "EXACT"
  },
  "robust_noise": {
    "description": "Apples-with-Apples robust-noise stability test. Random initial perturbation at amplitude 1e-10; constraints must remain bounded (no exponential blow-up) over 100 steps.",
    "reference": "Alcubierre et al. 2004 (Mexico City tests); Brügmann et al. 2008",
    "request": {
      "nx": 16,
      "ny": 16,
      "nz": 16,
      "box_length": 1,
      "n_steps": 100,
      "snapshot_interval": 10,
      "initial_data": "robust_noise",
      "gauge": "one_plus_log",
      "amplitude": 1e-10,
      "cfl": 0.25,
      "epsilon_ko": 0.1,
      "damping": 0.02,
      "formulation": "bssn",
      "eta_shift": 2
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    "wall_ms": 13786,
    "initial_ham_l2": 2.3959849401173567e-12,
    "final_ham_l2": 1.6272442296340401e-10,
    "ham_l2_growth_factor": 67.9154615034574,
    "final_alpha_min": 0.99999999995,
    "final_chi_min": 0.9999999984218143,
    "regulator_fires_total": 0,
    "bounded": true,
    "snapshots": [
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        "ham_l2": 2.3959849401173567e-12,
        "ham_max": 3.524291749976933e-12,
        "alpha_min": 0.99999999995,
        "chi_min": 0.9999999999666667,
        "regulator_fires": 0
      },
      {
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        "time": 0.1562499999921875,
        "ham_l2": 2.8269522267244335e-12,
        "ham_max": 5.868156534036159e-12,
        "alpha_min": 0.99999999995,
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        "regulator_fires": 0
      },
      {
        "step": 20,
        "time": 0.312499999984375,
        "ham_l2": 6.7206383342108384e-12,
        "ham_max": 1.2426374813201974e-11,
        "alpha_min": 0.99999999995,
        "chi_min": 0.9999999999277059,
        "regulator_fires": 0
      },
      {
        "step": 30,
        "time": 0.4687499999765625,
        "ham_l2": 1.4203323202149536e-11,
        "ham_max": 2.6808450126786912e-11,
        "alpha_min": 0.99999999995,
        "chi_min": 0.9999999998519468,
        "regulator_fires": 0
      },
      {
        "step": 40,
        "time": 0.62499999996875,
        "ham_l2": 2.5406987138233233e-11,
        "ham_max": 4.750821975697446e-11,
        "alpha_min": 0.99999999995,
        "chi_min": 0.9999999997433042,
        "regulator_fires": 0
      },
      {
        "step": 50,
        "time": 0.7812499999609375,
        "ham_l2": 3.9853668057361836e-11,
        "ham_max": 7.358716262823431e-11,
        "alpha_min": 0.99999999995,
        "chi_min": 0.999999999597244,
        "regulator_fires": 0
      },
      {
        "step": 60,
        "time": 0.937499999953125,
        "ham_l2": 5.755741408379666e-11,
        "ham_max": 1.0480802242068614e-10,
        "alpha_min": 0.99999999995,
        "chi_min": 0.9999999994215085,
        "regulator_fires": 0
      },
      {
        "step": 70,
        "time": 1.0937499999453124,
        "ham_l2": 7.86133482779767e-11,
        "ham_max": 1.4098792580155107e-10,
        "alpha_min": 0.99999999995,
        "chi_min": 0.9999999992160978,
        "regulator_fires": 0
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      {
        "step": 80,
        "time": 1.2499999999375,
        "ham_l2": 1.0313859966016321e-10,
        "ham_max": 1.8342657266429608e-10,
        "alpha_min": 0.99999999995,
        "chi_min": 0.999999998981012,
        "regulator_fires": 0
      },
      {
        "step": 90,
        "time": 1.4062499999296876,
        "ham_l2": 1.3126657684416937e-10,
        "ham_max": 2.3152760475070568e-10,
        "alpha_min": 0.99999999995,
        "chi_min": 0.9999999987162509,
        "regulator_fires": 0
      },
      {
        "step": 100,
        "time": 1.562499999921875,
        "ham_l2": 1.6272442296340401e-10,
        "ham_max": 2.847265442096293e-10,
        "alpha_min": 0.99999999995,
        "chi_min": 0.9999999984218143,
        "regulator_fires": 0
      }
    ],
    "trust": "EXACT"
  },
  "analytic_waveform": {
    "description": "Industry-standard analytic inspiral-merger-ringdown template (Khan-Husa PhenomD, Phys. Rev. D 93 (2016)). Used here as the reference waveform model; substrate drift attached at peak amplitude.",
    "request": {
      "mode": "template",
      "template_model": "phenomd",
      "m1_msun": 36,
      "m2_msun": 29,
      "chi1z": 0,
      "chi2z": 0,
      "distance_mpc": 410,
      "inclination": 0,
      "f_low_hz": 20,
      "f_high_hz": 1024,
      "delta_f_hz": 0.25,
      "psd": "aLIGO_design"
    },
    "wall_ms": 20,
    "has_strain": false,
    "keys_returned": [
      "event",
      "detector",
      "template",
      "n_samples",
      "sample_rate",
      "segment_seconds",
      "strain_excerpt",
      "strain_whitened_excerpt",
      "psd_freq",
      "psd_value",
      "snr_time",
      "snr_value",
      "triggers",
      "q_transform",
      "posterior",
      "sky",
      "wall_time_ms",
      "gpu_used",
      "bloom_boundary_hz",
      "trust"
    ],
    "trust": "VALID"
  },
  "geonum_drift": {
    "N16": {
      "value": 0.7816746507443837,
      "drift_shades": 0.6747599543787146,
      "trust": "PRECISE",
      "uncertainty": 0.0017790260997293784,
      "zone": 0
    },
    "N24": {
      "value": 0.15175484870169725,
      "drift_shades": 0.9329510662785196,
      "trust": "PRECISE",
      "uncertainty": 0.00047753854579694964,
      "zone": 0
    },
    "N32": {
      "value": 0.0495591318938251,
      "drift_shades": 0.3060647628733477,
      "trust": "PRECISE",
      "uncertainty": 0.000051161587740598974,
      "zone": 0
    }
  }
}