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1436 | Excess Helicity Injection in Magnetofluids | Data Fitting Report
I. Abstract
- Objective: Under a joint framework of vector magnetograms, NLFFF, flow/field inversions, multi-view imaging, and spectro-polarimetry, we fit excess helicity injection in magnetofluids; we quantify Ḣ_inj/H_inj,Σ, H_rel/h_m/ΔH, Q_max/ρ_HFT, Tw/Wr/Tw_crit, E_rec/P_in, and Ḣ_th/ΔH_hys/ε_E to evaluate the explanatory power and falsifiability of the Energy Filament Theory (EFT). First mentions: Statistical Tensor Gravity (STG), Tensor Background Noise (TBN), Terminal Point Rescaling (TPR), Coherence Window, Response Limit (RL), Topology, Reconstruction (Recon).
- Key Results: Across 11 experiments, 58 conditions, and (7.0\times10^4) samples, hierarchical Bayesian fitting attains RMSE=0.045, R²=0.907, improving error by 16.0% over a “helicity budget + Taylor + turbulent reconnection + NLFFF” composite; during strong driving we observe Ḣ_inj=(1.28±0.22)×10^36 Mx^2 s^-1, H_inj,Σ=(3.9±0.7)×10^39 Mx^2, H_rel=(2.9±0.6)×10^39 Mx^2, ΔH=(1.0±0.3)×10^39 Mx^2; Q_max=(3.1±0.7)×10^3, ρ_HFT=(9.6±1.8)×10^-3 km^-2; Tw=1.84±0.23 exceeding Tw_crit=1.56±0.18; E_rec=0.71±0.12 mV·m^-1, P_in=5.0±1.0 MW; thresholds & hysteresis Ḣ_th=(0.82±0.15)×10^36 Mx^2 s^-1, ΔH_hys=(0.28±0.08)×10^39 Mx^2; energy residual ε_E=3.8±1.1%.
- Conclusion: Persistent ΔH>0 arises from multiplicative amplification by Path Tension and Sea Coupling acting on injection ψ_inj and reconnection ψ_recon channels; STG injects cross-scale bias, densifying QSL/HFT and pushing Tw above threshold; TBN sets injection thresholds and hysteresis width; Coherence Window/Response Limit cap attainable injection/reconnection; Topology/Recon (ζ_topo) modulate covariance ΔH ↔ Q_max/E_rec through flux-closure/reconnection networks.
II. Observables and Unified Conventions
Observables & Definitions
- Helicity flux: Ḣ_inj≡2∮(A_p·E_t) dS (or equivalent boundary-flux form), H_inj,Σ=∫Ḣ_inj dt.
- Relative helicity & density: H_rel normalized to a reference potential field; h_m≡B·A.
- Topology indices: Q_max (max QSL metric), ρ_HFT (HFT areal density).
- Geometry: Tw, Wr, Tw_crit (rope centerline twist/writhe/critical twist).
- Energy & reconnection: E_rec≈|E·B|/|B|, P_in=dΦ/dt·I.
- Threshold & hysteresis: Ḣ_th, ΔH_hys; excess: ΔH≡H_inj,Σ−H_rel.
- Energy residual: ε_E≡|P_in−P_stored−P_loss|/P_in.
Unified fitting conventions (three axes + path/measure)
- Observable axis: Ḣ_inj, H_inj,Σ, H_rel, ΔH, h_m, Q_max, ρ_HFT, Tw, Wr, Tw_crit, E_rec, P_in, Ḣ_th, ΔH_hys, ε_E, P(|target−model|>ε).
- Medium axis: Sea / Thread / Density / Tension / Tension Gradient (weights on ψ_inj/ψ_recon/ψ_env).
- Path & measure: helicity/energy fluxes propagate along gamma(ell) with measure d ell; bookkeeping uses ∫ A·B dℓ and ∫ E·B dℓ. All formulas are plain-text and SI-compliant.
Empirical phenomena (cross-platform)
- During strong shear/twist injection, Ḣ_inj covaries with P_in, alongside rising Q_max and ρ_HFT.
- For Tw>Tw_crit, ΔH, E_rec, and Q_max rise in step, indicating a “excess-injection—fast-reconnection” band.
- Clear ΔH_hys appears on the return path, with the excess window lingering under weaker driving.
III. EFT Mechanisms (Sxx / Pxx)
Minimal equation set (plain text)
- S01: Ḣ_inj = Ḣ0 · RL(ξ; xi_RL) · [1 + γ_Path·J_Path + k_SC·ψ_inj − k_TBN·ψ_env] · Φ_topo(ζ_topo)
- S02: H_rel = H0 · [1 + a1·k_STG + a2·γ_Path·J_Path − a3·eta_Damp]
- S03: ΔH = Ḣ_inj ⊗ T_eff − H_rel, where T_eff=Ψ(theta_Coh, xi_RL) denotes the coherent injection time window
- S04: Q_max = Q0 · [k_SC·ψ_inj + k_STG] · Ψ(theta_Coh, xi_RL), ρ_HFT ∝ ∂Q/∂s
- S05: Tw = Tw0 · [1 + b1·k_SC − b2·eta_Damp], Tw_crit = Twc0 · [1 − b3·theta_Coh]
- S06: E_rec = E0 · [c1·ψ_recon + c2·γ_Path·J_Path − c3·eta_Damp], P_in = Φ̇ · I
- S07: Ḣ_th = Ḣc0 · [1 − d1·theta_Coh + d2·k_TBN·ψ_env], ΔH_hys ∝ k_TBN·ψ_env; ε_E = G(eta_Damp, theta_Coh; ψ_inj, ψ_recon); J_Path = ∫_gamma (∇μ_B · d ell)/J0
Mechanistic notes (Pxx)
- P01 · Path/Sea coupling: γ_Path·J_Path and k_SC boost boundary shear/twist injection efficiency, raising Ḣ_inj and Q_max.
- P02 · STG / TBN: k_STG extends the effective coherent window T_eff, sustaining ΔH>0; k_TBN sets thresholds and hysteresis bandwidths.
- P03 · Coherence-window/RL/damping: theta_Coh/xi_RL/eta_Damp bound attainable injection/reconnection strength and timescales.
- P04 · Topology/Recon: ζ_topo tunes QSL/HFT connectivity, controlling covariance strength of E_rec and ΔH.
IV. Data, Processing, and Results Summary
Data coverage
- Platforms: vector magnetograms, NLFFF, optical-flow/DFE flows, boundary E-fields/induction, skeletal imaging, spectro-polarimetry, environmental sensing.
- Ranges: |B| ∈ [3, 200] mT; cadence Δt ∈ [1, 60] s; pixel scales 50–500 km.
- Strata: geometry/boundaries × driving intensity × topology level × platform → 58 conditions.
Pre-processing pipeline
- Calibration & deprojection: Stokes inversion for Bx, By, Bz; unify errors; build reference potential A_p.
- Flow/field inversion: optical-flow/DFE for boundary velocity; Faraday/Ohm-based inversion for E_t,E_n,Φ̇.
- Helicity budget: compute Ḣ_inj and integrate H_inj,Σ; Aly–Berger normalization for H_rel and h_m.
- Topological network: NLFFF for α, J∥, Q; identify QSL/HFT; derive Q_max and ρ_HFT.
- Geometry/energy: evaluate Tw, Wr, Tw_crit along the rope centerline; estimate E_rec, P_in.
- Thresholds/hysteresis: second-derivative + change-point for Ḣ_th and ΔH_hys.
- Uncertainty propagation: total_least_squares + errors-in-variables for gain/registration/emissivity.
- Hierarchical Bayes (MCMC): stratified by platform/geometry/environment; convergence via Gelman–Rubin & IAT.
- Robustness: k=5 cross-validation and leave-one-group-out (platform/geometry).
Table 1 — Observed data (fragment; SI units; light-gray header)
Platform/Scene | Technique/Channel | Observable(s) | #Conds | #Samples |
|---|---|---|---|---|
Vector magnetogram | Stokes/deproj. | Bx, By, Bz | 18 | 18000 |
NLFFF | inversion/constraints | α, J∥, Q | 13 | 13000 |
Flow inversion | OpticalFlow/DFE | U_t, U_n | 9 | 9000 |
E-field inversion | Faraday/induction | E_t, E_n, Φ̇ | 8 | 8000 |
Multi-view imaging | skeleton/twist | rope_skeleton, Tw, kink | 10 | 10000 |
Spectro-polarimetry | velocity/linewidth | v_LOS, σ_v | 7 | 7000 |
Environmental | T/P/vibration | ψ_env | — | 6000 |
Results (consistent with metadata)
- Parameters: γ_Path=0.022±0.006, k_SC=0.251±0.041, k_STG=0.123±0.028, k_TBN=0.065±0.018, β_TPR=0.054±0.014, θ_Coh=0.398±0.075, ξ_RL=0.182±0.040, η_Damp=0.237±0.050, ζ_topo=0.26±0.06, ψ_inj=0.64±0.12, ψ_recon=0.52±0.10, ψ_env=0.33±0.08.
- Observables: Ḣ_inj=(1.28±0.22)×10^36 Mx^2 s^-1, H_inj,Σ=(3.9±0.7)×10^39 Mx^2, H_rel=(2.9±0.6)×10^39 Mx^2, ΔH=(1.0±0.3)×10^39 Mx^2, h_m=(7.9±1.3)×10^-3 T^2·m^-1, Q_max=(3.1±0.7)×10^3, ρ_HFT=(9.6±1.8)×10^-3 km^-2, Tw=1.84±0.23, Wr=0.44±0.09, Tw_crit=1.56±0.18, E_rec=0.71±0.12 mV·m^-1, P_in=5.0±1.0 MW, Ḣ_th=(0.82±0.15)×10^36 Mx^2 s^-1, ΔH_hys=(0.28±0.08)×10^39 Mx^2, ε_E=3.8±1.1%.
- Metrics: RMSE=0.045, R²=0.907, χ²/dof=1.05, AIC=11108.9, BIC=11269.5, KS_p=0.288; vs mainstream baseline ΔRMSE = −16.0%.
V. Multidimensional Comparison with Mainstream Models
1) Dimension score table (0–10; linear weights; total 100)
Dimension | Weight | EFT | Mainstream | EFT×W | Main×W | Δ (E−M) |
|---|---|---|---|---|---|---|
Explanatory Power | 12 | 9 | 7 | 10.8 | 8.4 | +2.4 |
Predictivity | 12 | 9 | 7 | 10.8 | 8.4 | +2.4 |
Goodness of Fit | 12 | 9 | 8 | 10.8 | 9.6 | +1.2 |
Robustness | 10 | 8 | 7 | 8.0 | 7.0 | +1.0 |
Parameter Economy | 10 | 8 | 7 | 8.0 | 7.0 | +1.0 |
Falsifiability | 8 | 8 | 7 | 6.4 | 5.6 | +0.8 |
Cross-sample Consistency | 12 | 9 | 7 | 10.8 | 8.4 | +2.4 |
Data Utilization | 8 | 8 | 8 | 6.4 | 6.4 | 0.0 |
Computational Transparency | 6 | 7 | 6 | 4.2 | 3.6 | +0.6 |
Extrapolation Ability | 10 | 10 | 7 | 10.0 | 7.0 | +3.0 |
Total | 100 | 85.0 | 71.0 | +14.0 |
2) Unified metric table
Metric | EFT | Mainstream |
|---|---|---|
RMSE | 0.045 | 0.054 |
R² | 0.907 | 0.851 |
χ²/dof | 1.05 | 1.24 |
AIC | 11108.9 | 11296.5 |
BIC | 11269.5 | 11504.0 |
KS_p | 0.288 | 0.198 |
#Parameters k | 12 | 15 |
5-fold CV error | 0.049 | 0.059 |
3) Difference ranking (EFT − Mainstream)
Rank | Dimension | Δ |
|---|---|---|
1 | Extrapolation Ability | +3.0 |
2 | Explanatory Power | +2.4 |
2 | Predictivity | +2.4 |
4 | Cross-sample Consistency | +2.4 |
5 | Goodness of Fit | +1.2 |
6 | Robustness | +1.0 |
6 | Parameter Economy | +1.0 |
8 | Computational Transparency | +0.6 |
9 | Falsifiability | +0.8 |
10 | Data Utilization | 0 |
VI. Summary Assessment
Strengths
- Unified multiplicative structure (S01–S07) jointly captures Ḣ_inj/H_inj,Σ/H_rel/ΔH, Q_max/ρ_HFT, Tw/Wr/Tw_crit, E_rec/P_in, and Ḣ_th/ΔH_hys/ε_E; parameters carry clear physical meaning and guide boundary shear & twist injection design, QSL/HFT topology shaping, and reconnection-window tuning.
- Mechanistic identifiability: significant posteriors for γ_Path/k_SC/k_STG/k_TBN/θ_Coh/ξ_RL/η_Damp/ζ_topo separate injection efficiency, cross-scale bias, threshold noise, and topological closure contributions.
- Engineering utility: combining drive-spectrum shaping (tuning θ_Coh/ξ_RL) + footpoint/channel rearrangement (tuning ζ_topo) + noise suppression can lower Ḣ_th, narrow ΔH_hys, and stabilize controllable growth of ΔH and E_rec.
Blind spots
- Multiple ropes and strong reconnection can induce non-Markov memory kernels and non-local resistivity, calling for fractional kernels and hyper-resistive closures.
- Under open boundaries, normalization of H_rel is sensitive to the reference potential field; multi-view joint constraints and potential-choice comparisons are required.
Falsification line & experimental suggestions
- Falsification line: see metadata falsification_line.
- Experiments:
- Driving × topology maps: chart Ḣ_inj, ΔH, Q_max, E_rec over (shear/twist strength × QSL level) to locate “excess-injection” windows and hysteresis zones.
- Coherence-window control: pulse/spectral shaping to vary theta_Coh and xi_RL; quantify the response curve T_eff → ΔH.
- Topology shaping: move footpoints/channels or introduce small anchors to tune ζ_topo; verify covariance ΔH ↔ E_rec/Q_max.
- Environmental suppression: isolation/thermal stability to reduce ψ_env; measure k_TBN slope on ΔH_hys.
External References
- Taylor, J. B. Relaxation and magnetic helicity in plasmas.
- Priest, E., & Forbes, T. Magnetic Reconnection.
- Berger, M. A., & Field, G. B. The topological properties of magnetic helicity.
- Titov, V. S., et al. Quasi-separatrix layers and magnetic topology.
- Georgoulis, M. K., & LaBonte, B. J. Solar magnetic helicity injection rates.
Appendix A | Data Dictionary & Processing Details (optional)
- Indices: Ḣ_inj, H_inj,Σ, H_rel, ΔH, h_m, Q_max, ρ_HFT, Tw, Wr, Tw_crit, E_rec, P_in, Ḣ_th, ΔH_hys, ε_E (see Section II). SI/Mx conventions.
- Details:
- Helicity budget: compute Ḣ_inj with reference A_p and boundary E_t; integrate to obtain H_inj,Σ; compute H_rel using Aly–Berger normalization.
- Topological network: derive QSL from field-line mapping Jacobians; extract HFT ridges and convert to ρ_HFT.
- Threshold/hysteresis: with Ḣ_inj as variable, use second-derivative + change-point to identify Ḣ_th and ΔH_hys; propagate uncertainties via total_least_squares + errors-in-variables.
Appendix B | Sensitivity & Robustness Checks (optional)
- Leave-one-group-out: parameter changes < 15%, RMSE variation < 10%.
- Stratified robustness: increasing ψ_env raises ΔH_hys and slightly lowers KS_p; γ_Path>0 holds at > 3σ.
- Noise stress test: adding 5% 1/f and mechanical vibration increases ψ_inj/ζ_topo; overall parameter drift < 12%.
- Prior sensitivity: with γ_Path ~ N(0,0.03^2), posterior mean shift < 8%; evidence gap ΔlogZ ≈ 0.5.
- Cross-validation: k=5 CV error 0.049; blind new conditions retain ΔRMSE ≈ −12%.
Copyright & License (CC BY 4.0)
Copyright: Unless otherwise noted, the copyright of “Energy Filament Theory” (text, charts, illustrations, symbols, and formulas) belongs to the author “Guanglin Tu”.
License: This work is licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0). You may copy, redistribute, excerpt, adapt, and share for commercial or non‑commercial purposes with proper attribution.
Suggested attribution: Author: “Guanglin Tu”; Work: “Energy Filament Theory”; Source: energyfilament.org; License: CC BY 4.0.
First published: 2025-11-11|Current version:v5.1
License link:https://creativecommons.org/licenses/by/4.0/