| name | lyons-2025-flux-cancellation-jet-coronal-hole-eruption |
| 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} |
lyons-2025-flux-cancellation-jet-coronal-hole-eruption
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 interpreting CH-jet onsets via flux-cancellation in flux-emergence MHD simulations, with PFSS framing the global ambient.
Layer 1 — Scientific invariant
Paper identity
- Title: Magnetic Flux Cancellation in a Flux-Emergence MHD Simulation of Coronal-Hole Eruptions and Jets
- First author: TODO_verify
- Authors: TODO_verify
- Year: 2025
- arXiv: 2505.21155 (posted 2025-05-27)
- Journal: TODO_verify_with_full_text
- DOI: TODO_verify_with_full_text
Claim (narrow form)
In flux-emergence MHD CH simulations, flux cancellation at the polarity-inversion line drives jet onset on a timescale set by the cancellation rate — a behaviour reproducible from observed Br evolution with PFSS providing the ambient field.
Method assumptions
- Flux-emergence + cancellation can be parameterized from HMI.
- PFSS ambient is consistent with the simulation domain.
Data assumptions
- HMI Br + vector at the CH-jet site.
- Synoptic Br for PFSS.
- AIA EUV for jet observation.
Failure modes (skill memory)
- Cancellation rate estimate is grid-dependent.
- PFSS ambient mismatches simulation boundary.
Figure / numerical targets
- Jet onset vs cancellation-rate scatter.
- Simulated vs observed AIA jet kinematics.
Claim boundary
In scope. The simulated parameter range.
Out of scope — do NOT generalize:
- Do NOT extend the onset-time scaling outside the simulated cancellation-rate range.
Layer 2 — Executable protocol (capability-typed)
Required capabilities (abstract)
| Capability | Purpose | Notes |
|---|
magnetogram.fetch_hmi() | HMI | |
flux.cancellation_rate() | cancellation diagnostic | |
mhd.flux_emergence_run() | FE MHD | |
pfss.solve() | ambient | |
imagery.fetch_aia() | EUV jet | |
Procedure
- Estimate cancellation rate from HMI evolution.
- Drive MHD FE simulation.
- Use PFSS as ambient.
- Compare simulated jet kinematics to AIA.
Validation target
Onset-time vs cancellation-rate scaling.
Layer 3 — Adapter / runtime notes (optional examples)
- sunkit-magex.pfss; MHD code paper-specific.
Layer 4 — Research-generation affordances
- Compose with [[raouafi-2025-switchback-coronal-jet-precursors]] for a jet-onset → switchback-precursor causal chain.
- Generative hypothesis: cancellation-rate distribution across PSP encounter footpoints should predict switchback occurrence.
Skill graph → depends_on
- [[raouafi-2025-switchback-coronal-jet-precursors]]
- [[paper-stansby-2020-pfsspy-python-pfss]]
Links
TODOs for full-text verification
- lead author
- DOI
- MHD code
- cancellation-rate estimator