Pith Number

pith:W7JIJY4R

pith:2025:W7JIJY4RHGZOEXFJHAFMOG5LIN

not attested not anchored not stored refs pending

The rotation-magnetism relationship in solar-type stars. Constraining magnetic flux emergence rates

Alexander I. Shapiro, Emre Isik, Natalie A. Krivova, Sami K. Solanki

Magnetic flux emergence rates in solar-type stars must scale with the 1.9 power of rotation rate to match observed field strengths.

arxiv:2512.18095 v3 · 2025-12-19 · astro-ph.SR

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\usepackage{pith}
\pithnumber{W7JIJY4RHGZOEXFJHAFMOG5LIN}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

magnetic flux emergence rates must scale steeply with rotation (power-law exponent of about 1.9) to reproduce observed field strengths, significantly exceeding the estimates in the literature

C2weakest assumption

The heuristic decomposition of total surface flux into active-region and small-scale-dynamo components plus the assumption that the FEAT transport physics remains valid across the full range of rotation rates and metallicities tested

C3one line summary

Magnetic flux emergence rates in G-type stars must scale as rotation to the power ~1.9 to match observed surface field strengths, after correcting for metallicity and effective temperature effects.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T00:00:30.965790Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7d284e39139b2e25ca9380ac71bab43727d4546fc39ae6881f9ecd080fe5383

Aliases

arxiv: 2512.18095 · arxiv_version: 2512.18095v3 · doi: 10.48550/arxiv.2512.18095 · pith_short_12: W7JIJY4RHGZO · pith_short_16: W7JIJY4RHGZOEXFJ · pith_short_8: W7JIJY4R

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/W7JIJY4RHGZOEXFJHAFMOG5LIN \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: b7d284e39139b2e25ca9380ac71bab43727d4546fc39ae6881f9ecd080fe5383

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7acfc0b5ea1567a120ecde5f0e928f6a9b86af004ed8bc0301d983fbf31f907f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-12-19T22:07:37Z",
    "title_canon_sha256": "248c65440d1f5fb41db687d1c3a36754a57a38d64bf71388461629eddb15eea4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2512.18095",
    "kind": "arxiv",
    "version": 3
  }
}