| name | huang-2024-stereoscopic-coronal-loop-morphology |
| description | Per-entry paper-skill in wave500_coronal_source_mapping_pfss_045 (HelioSI 501-corpus). See body and metadata.yaml for paper identity and claim boundary. |
| paper | {"authors_verified":false} |
huang-2024-stereoscopic-coronal-loop-morphology
Runtime-neutral paper-skill. Layered: (1) scientific invariants, (2) executable protocol against abstract capabilities, (3) adapter notes (optional examples only), (4) research-generation affordances.
Trigger
Reach for this skill when reconstructing coronal-loop 3-D morphology from stereoscopic EUV imagery and comparing to PFSS / NLFFF extrapolations.
Layer 1 — Scientific invariant
Paper identity
- Title: Stereoscopic Observations Reveal Coherent Morphology and Evolution of Solar Coronal Loops
- First author: TODO_verify
- Authors: TODO_verify
- Year: 2024
- arXiv: 2411.16943 (posted 2024-11-25)
- Journal: TODO_verify_with_full_text
- DOI: TODO_verify_with_full_text
Claim (narrow form)
Stereoscopic-EUV-reconstructed loop geometries match PFSS+NLFFF extrapolations to within a paper-stated angular-deviation metric on a non-trivial fraction of cases, with the residual fraction localizing model defects.
Method assumptions
- Stereoscopic reconstruction is geometrically valid.
- Loop identification across viewpoints is consistent.
Data assumptions
- STEREO-A/B + SDO/AIA paired EUV imagery.
- HMI vector Br for NLFFF.
- Synoptic Br for PFSS background.
Failure modes (skill memory)
- Loop-pair identification is the dominant error source.
- NLFFF boundary preparation biases the comparison.
Figure / numerical targets
- Reconstructed loop overlaid on PFSS+NLFFF traces.
- Angular-deviation histogram.
Claim boundary
In scope. The studied loop sample.
Out of scope — do NOT generalize:
- Do NOT generalize the deviation statistic to AR cores where loop coverage is sparse.
Layer 2 — Executable protocol (capability-typed)
Required capabilities (abstract)
| Capability | Purpose | Notes |
|---|
imagery.fetch_aia() | AIA EUV | |
imagery.fetch_stereo() | STEREO EUV | |
loop.stereoscopic_reconstruct() | 3-D loop | |
magnetogram.fetch_hmi_vector() | HMI vector | |
nlfff.solve() | AR NLFFF | |
pfss.solve() | background | |
metric.angular_deviation() | loop-vs-trace metric | |
Procedure
- Pair stereoscopic loop tracings.
- Reconstruct 3-D loop morphology.
- Solve PFSS+NLFFF.
- Compare loop to extrapolation traces.
Validation target
Reproduce angular-deviation distribution.
Layer 3 — Adapter / runtime notes (optional examples)
- SunPy/aiapy + STEREO pipelines; sunkit-magex.pfss; NLFFF paper-specific.
Layer 4 — Research-generation affordances
- Compose with [[multi-constraint-pfss-extrapolation-model]] — this loop sample is exactly the kind of input that paper consumes.
- Generative hypothesis: residual deviations should localize in AR cores where [[vanderlinden-2024-flux-rope-magneto-friction-electric-field]] predicts non-potential currents.
Skill graph → depends_on
- [[multi-constraint-pfss-extrapolation-model]]
- [[flare-precursor-fine-scale-topology-extrapolation]]
Links
TODOs for full-text verification
- lead author
- DOI
- loop-sample identity
- angular-deviation tolerance