Pith Number

pith:FUYJN2ZN

pith:2023:FUYJN2ZNMJDB6LAQP4JMN445R2

not attested not anchored not stored refs resolved

Union Through UNITY: Cosmology with 2,000 SNe Using a Unified Bayesian Framework

Alex G. Kim, Andy Fruchter, Chris Lidman, David Rubin, Eric Linder, Greg Aldering, Marc Betoule, Nao Suzuki, Pilar Ruiz-Lapuente, Saul Perlmutter, Xiaosheng Huang

A compilation of 2087 Type Ia supernovae yields cosmological constraints showing weak tension with LambdaCDM.

arxiv:2311.12098 v4 · 2023-11-20 · astro-ph.CO

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Record completeness

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2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

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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 compute updated cosmological constraints with Union3 and UNITY1.5, finding weak 1.7--2.6 sigma tension with LambdaCDM and possible evidence for thawing dark energy (w0 > -1, wa < 0).

C2weakest assumption

That all 24 datasets can be placed on a single consistent distance scale and that the UNITY1.5 model fully captures selection effects, outlier populations, and unexplained dispersion without residual biases.

C3one line summary

Union3 compilation of 2087 SNe Ia with UNITY1.5 framework shows 1.7-2.6 sigma tension with LambdaCDM and possible thawing dark energy.

References

266 extracted · 266 resolved · 18 Pith anchors

[1] K., Ag¨ ueros, M 2004 · doi:10.1086/421365

[2] Abbott , T. M. C., Abdalla , F. B., Annis , J., et al. 2018, , 480, 3879, 10.1093/mnras/sty1939 2018 · doi:10.1093/mnras/sty1939

[3] Abbott , T. M. C., Allam , S., Andersen , P., et al. 2019, , 872, L30, 10.3847/2041-8213/ab04fa 2019 · doi:10.3847/2041-8213/ab04fa

[4] Abbott , T. M. C., Adam \'o w , M., Aguena , M., et al. 2021, , 255, 20, 10.3847/1538-4365/ac00b3 2021 · doi:10.3847/1538-4365/ac00b3

[5] K., Ag \"u eros , M 2007 · doi:10.1086/518864

Formal links

2 machine-checked theorem links

Cited by

50 papers in Pith

Assessing observational constraints on dark energy

The Chicago Carnegie Hubble Program: Improving the Calibration of SNe Ia with JWST Measurements of the Tip of the Red Giant Branch

Signatures of Modified Gravity Below $\mathcal{O}(10)$ Mpc in a Dynamical Dark Energy Background

Dark Energy in Ghost-free non-local Gravity

Probing Dark Energy Microphysics with kSZ Tomography

Receipt and verification

First computed	2026-05-17T23:38:50.400265Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d3096eb2d62461f2c107f12c6f39d8e9de76fd7d6daa432aa49e773e6846243

Aliases

arxiv: 2311.12098 · arxiv_version: 2311.12098v4 · doi: 10.48550/arxiv.2311.12098 · pith_short_12: FUYJN2ZNMJDB · pith_short_16: FUYJN2ZNMJDB6LAQ · pith_short_8: FUYJN2ZN

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/FUYJN2ZNMJDB6LAQP4JMN445R2 \
  | 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: 2d3096eb2d62461f2c107f12c6f39d8e9de76fd7d6daa432aa49e773e6846243

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4ee6ca2a56e350c5495a0ffa401a6f5e4c1493d36e7392d825d643877bb055f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2023-11-20T19:00:01Z",
    "title_canon_sha256": "485a0d470a075f4d776026adef3ac8657aec38bf0c852918d0d2df5099b22a8e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2311.12098",
    "kind": "arxiv",
    "version": 4
  }
}