Pith Number

pith:BKDUKIKU

pith:2026:BKDUKIKUU44Y4Y2LVPLVEP3W26

not attested not anchored not stored refs resolved

Magnetic field alignment with dense cores in the transition between cloud and core scales

Ayush Pandhi, Doug Johnstone, Fr\'ed\'erick Poidevin, James Di Francesco, Laura Fissel, Mehrnoosh Tahani, Rachel Friesen, Sarah Sadavoy, Sean Yin, Simon Coud\'e

Magnetic fields lose coherent alignment when moving from cloud scales to dense core scales in star-forming regions.

arxiv:2604.09770 v1 · 2026-04-10 · astro-ph.GA · astro-ph.SR

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\usepackage{pith}
\pithnumber{BKDUKIKUU44Y4Y2LVPLVEP3W26}

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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

We conclude that there is a clear change in the magnetic field in the transition from cloud- to core-scales. Our results suggest that the magnetic field may not play a dominant role in the evolution of dense cores on core scales.

C2weakest assumption

That the observed dust polarization reliably traces the plane-of-sky magnetic field orientation at both cloud and core scales without significant contamination from other effects such as grain alignment efficiency changes or line-of-sight confusion.

C3one line summary

Core-scale magnetic fields in star-forming regions are more disordered than cloud-scale fields and align randomly with core orientations and velocity gradients.

References

81 extracted · 81 resolved · 1 Pith anchors

[1] 2025, arXiv e-prints, arXiv:2501.13931, 10.48550/arXiv.2501.13931 2025 · doi:10.48550/arxiv.2501.13931

[2] W., & Darling, D 1954 · doi:10.1080/01621459.1954.10501232

[3] , year = 2015, month = aug, volume = 2015 · doi:10.1146/annurev-astro-082214-122414

[4] 2010, , 518, L102, 10.1051/0004-6361/201014666 2010 · doi:10.1051/0004-6361/201014666

[5] Arce-Tord , C., Louvet , F., Cortes , P. C., et al. 2020, , 640, A111, 10.1051/0004-6361/202038024 2020 · doi:10.1051/0004-6361/202038024

Receipt and verification

First computed	2026-05-21T02:05:02.636016Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a87452154a7398e634babd7523f76d79735af687517a7c4ffadf3fa7e899084

Aliases

arxiv: 2604.09770 · arxiv_version: 2604.09770v1 · doi: 10.48550/arxiv.2604.09770 · pith_short_12: BKDUKIKUU44Y · pith_short_16: BKDUKIKUU44Y4Y2L · pith_short_8: BKDUKIKU

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/BKDUKIKUU44Y4Y2LVPLVEP3W26 \
  | 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: 0a87452154a7398e634babd7523f76d79735af687517a7c4ffadf3fa7e899084

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f45ea9c8286be181111b8e28333c1e5b046006ac21bc21f80f9d83d81abdc95",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-04-10T18:00:13Z",
    "title_canon_sha256": "dec7a1f3b8a705eeae44758084e1bc1a0f38d0e60e46aa930beaafb1b04842f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.09770",
    "kind": "arxiv",
    "version": 1
  }
}