| name | milligan-2024-flares-sympathetic-angular-separation |
| 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} |
milligan-2024-flares-sympathetic-angular-separation
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 testing magnetic-connection hypotheses for sympathetic flares using PFSS-traced AR-to-AR topology distances on the source surface.
Layer 1 — Scientific invariant
Paper identity
- Title: Flaring Together: A Preferred Angular Separation Between Sympathetic Flares on the Sun
- First author: TODO_verify
- Authors: TODO_verify
- Year: 2024
- arXiv: 2412.10143 (posted 2024-12-13)
- Journal: TODO_verify_with_full_text
- DOI: TODO_verify_with_full_text
Claim (narrow form)
Sympathetic flare pairs cluster at a preferred angular separation that aligns with PFSS-traced AR connectivity rather than great-circle distance alone.
Method assumptions
- Flare pairs can be operationally defined within Δt window.
- PFSS connectivity between ARs is meaningful for sympathy.
Data assumptions
- GOES flare list with AR identifiers.
- Synoptic Br for the studied cycle.
Failure modes (skill memory)
- Δt window defines the sympathy population.
- PFSS misses sub-resolution AR substructure.
Figure / numerical targets
- Sympathy frequency vs angular separation.
- PFSS-connected vs unconnected pair histograms.
Claim boundary
In scope. Paper's flare-list and PFSS configuration.
Out of scope — do NOT generalize:
- Do NOT cite preferred separation outside the modelled cycle.
- Do NOT attribute sympathy solely to PFSS connectivity.
Layer 2 — Executable protocol (capability-typed)
Required capabilities (abstract)
| Capability | Purpose | Notes |
|---|
flare.fetch_goes_list() | flare list | |
magnetogram.fetch_synoptic_br() | Br | |
pfss.solve() | PFSS | |
topology.ar_connectivity() | AR-to-AR PFSS distance | |
Procedure
- Build flare-pair list within Δt window.
- Solve PFSS for each pair's CR.
- Compute PFSS-distance and great-circle distance per pair.
- Histogram sympathy fraction vs separation.
Validation target
Reproduce the preferred-separation feature.
Layer 3 — Adapter / runtime notes (optional examples)
- sunkit-magex.pfss for the PFSS step; flare list via SunPy/HEK.
Layer 4 — Research-generation affordances
- Compose with [[jiang-2024-nested-active-regions-hcs-reversal]] to test whether nested-AR phases enhance sympathy.
- Generative hypothesis: PFSS connectivity should be replaced by fluxon connectivity ([[deforest-2024-flux-fluxon-coronal-modeling]]) to resolve the preferred-separation tail.
Skill graph → depends_on
- [[paper-stansby-2020-pfsspy-python-pfss]]
- [[jiang-2024-nested-active-regions-hcs-reversal]]
Links
TODOs for full-text verification
- lead author
- DOI
- Δt window
- flare-pair definition