| name | katsavrias-2025-low-db-streams-source-variability |
| 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} |
katsavrias-2025-low-db-streams-source-variability
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 characterizing low-δB solar-wind streams via PFSS source-region attribution and quantifying the source–in-situ variability link.
Layer 1 — Scientific invariant
Paper identity
- Title: On the Relation Between Source Region and In-Situ Variability of Low-δB Solar Wind Streams
- First author: TODO_verify
- Authors: TODO_verify
- Year: 2025
- arXiv: 2511.21971 (posted 2025-11-26)
- Journal: TODO_verify_with_full_text
- DOI: TODO_verify_with_full_text
Claim (narrow form)
Low-δB solar-wind streams map via PFSS to compact, low-expansion-factor source regions, with in-situ variability metrics scaling predictably with source-region size.
Method assumptions
- Low-δB classification is independent of PFSS.
- Source-region size is measurable in PFSS footpoint maps.
Data assumptions
- In-situ B with high-cadence δB statistics.
- Synoptic Br for PFSS.
Failure modes (skill memory)
- Low-δB definition depends on cadence.
- Source-region size depends on footpoint-tracing seed density.
Figure / numerical targets
- Stream classification map.
- δB variability vs source-region size scatter.
Claim boundary
In scope. The studied interval.
Out of scope — do NOT generalize:
- Do NOT extend the scaling outside the studied δB range.
Layer 2 — Executable protocol (capability-typed)
Required capabilities (abstract)
| Capability | Purpose | Notes |
|---|
in_situ.fetch_b_high_cadence() | B at high cadence | |
sw.classify_low_db() | low-δB classifier | |
magnetogram.fetch_synoptic_br() | Br | |
pfss.solve() | PFSS | |
source.measure_region_size() | source-region size | |
Procedure
- Classify low-δB streams.
- Back-map via PFSS.
- Measure source-region size and expansion factor.
- Test δB-vs-size scaling.
Validation target
Reproduce δB-vs-size scaling.
Layer 3 — Adapter / runtime notes (optional examples)
- sunkit-magex.pfss; pyspedas for in-situ.
Layer 4 — Research-generation affordances
- Compose with [[stansby-2025-open-closed-flux-boundary-slow-wind]] — low-δB streams as OCB-proximate slow wind.
- Generative hypothesis: low-δB sources should overlap with AR-edge upflow patches ([[brooks-2025-active-region-upflows-coronal-coupling]]).
Skill graph → depends_on
- [[stansby-2025-open-closed-flux-boundary-slow-wind]]
- [[paper-stansby-2020-pfsspy-python-pfss]]
Links
TODOs for full-text verification
- lead author
- DOI
- low-δB threshold
- source-region metric