Pith Number

pith:WRZKMABK

pith:2026:WRZKMABKYFFMTBCXTPVMPKFPSI

not attested not anchored not stored refs resolved

Lyman-alpha Radiation Pressure in Dense Star Clusters: Implications for Star Formation and Winds at Cosmic Dawn

Aaron Smith, Shyam H Menon

Lyα radiation pressure mildly reduces gas-to-star conversion efficiency in dense high-redshift clusters while dominating the launch of rapid outflows.

arxiv:2605.13982 v1 · 2026-05-13 · astro-ph.GA

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\usepackage{pith}
\pithnumber{WRZKMABKYFFMTBCXTPVMPKFPSI}

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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

Lyα is likely to have mild (~10%) effects on the gas-to-star conversion efficiencies (ε* ≳60%) for Zd ≳0.01 Zd,⊙, and even in dust-free environments, ε* ≳25% - much higher than the <10% values typical of star-forming regions in the local Universe.

C2weakest assumption

The post-processed simulation snapshots accurately capture the density and velocity structure of real dense filaments (n ≳ 10^4 cm^{-3}) such that they remain sub-Eddington under Lyα radiation.

C3one line summary

Lyα radiation pressure mildly reduces gas-to-star conversion efficiency in dense high-redshift clusters while dominating the launch of rapid outflows.

References

166 extracted · 166 resolved · 2 Pith anchors

[1] L., Coe , D., et al 2024 · doi:10.3847/1538-4357/ad6001

[2] D., Vanzella, E., et al 2024 · doi:10.48550/arxiv.2401.03224

[3] Adams, T. F. 1975, ApJ, 201, 350, doi: 10.1086/153891 Ad´ ela¨ ıde, C., Angela, A., Vasily, K., et al. 2026, A first GLIMPSE into star clusters populations across cosmic time, arXiv, doi: 10.48550/arX 1975 · doi:10.1086/153891

[4] Ahn, S.-H., Lee, H.-W., & Lee, H. M. 2002, The Astrophysical Journal, 567, 922, doi: 10.1086/338497 Amor´ ın, R. O., Rodr´ ıguez-Henr´ ıquez, M., Fern´ andez, V., et al. 2024, A&A, 682, L25, doi: 10.1 2002 · doi:10.1086/338497

[5] Balay, S., Gropp, W. D., McInnes, L. C., & Smith, B. F. 1997, in Modern Software Tools in Scientific Computing, ed. E. Arge, A. M. Bruaset, & H. P. Langtangen (Birkh¨ auser Press), 163–202 1997

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-17T23:39:13.368241Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b472a6002ac14ac984579beac7a8af922e07faa7a572cdbeab12f4fd6ce39829

Aliases

arxiv: 2605.13982 · arxiv_version: 2605.13982v1 · doi: 10.48550/arxiv.2605.13982 · pith_short_12: WRZKMABKYFFM · pith_short_16: WRZKMABKYFFMTBCX · pith_short_8: WRZKMABK

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/WRZKMABKYFFMTBCXTPVMPKFPSI \
  | 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: b472a6002ac14ac984579beac7a8af922e07faa7a572cdbeab12f4fd6ce39829

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "841d482cbdcc0869e1598533b2ecd60ea454dc2766a4002ce5240f3f5055719a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-05-13T18:01:02Z",
    "title_canon_sha256": "c12939addf8b2d5972a5f283e1faa46f31dea7ed57df00104ca6c0178a0b8a1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.13982",
    "kind": "arxiv",
    "version": 1
  }
}