the data · pantheon-plus-sh0es

Pantheon+ / SH0ES supernova compilation

Name: Pantheon+ / SH0ES supernova compilation
Creator: Pantheon+ and SH0ES teams

expansion Pantheon+ and SH0ES teams 3 files · 32.3 MB

The full Pantheon+ Type Ia supernova compilation (1701 light curves) with SH0ES Cepheid-host calibrators, plus the 1701x1701 STAT+SYS covariance matrix. Used for every SN-anchored expansion fit and for the SH0ES side of the Hubble-tension claims. The release README explicitly forbids fitting cosmology with diagonal errors — the exact failure mode that produced the quarantined 6.8/7.8-sigma headlines.

Files — sizes and hashes computed from disk, not quoted

file	size	sha-256
Pantheon+SH0ES.dat	565.7 KB	1cb0fc379ef066af…	download
Pantheon+SH0ES_STAT+SYS.cov	31.7 MB	abf806d966485e64…	download
Pantheon+README.txt	4.0 KB	e2b0d262757f01c1…	download

verify: shasum -a 256 <file> — must match the hash above or discard the file.

Used by claims

USR-2026-0001 Dark energy evolves: a CPL (w₀, wₐ) fit to DESI DR2 BAO + CMB + Pantheon+ beats ΛCDM by Δχ²... PROVISIONAL

USR-2026-0002 The Hubble tension is real in this pipeline: post-Lyman-α-fix inverse-ladder H₀ = 68.71 ±... PROVISIONAL

USR-2026-0003 The evolving-DE preference appears in all three SN compilations refit through one pipeline:... PROVISIONAL

USR-2026-0004 Binned w(z) rises from -0.920 ± 0.040 (z = 0.0-0.4) through -1.078 ± 0.093 (z = 0.4-1.0) to... PROVISIONAL

USR-2026-0005 Of the five late-time dark-energy candidates tested, none reaches H₀ = 73 when SH0ES is... PROVISIONAL

USR-2026-0006 Holographic dark energy (Hubble-horizon HDE) is ruled out by information criteria: ΔAIC =... KILLED

USR-2026-0007 Sign-switching Λ (Λs-CDM) is NOT preferred by this data: ΔAIC = +1.50 versus ΛCDM with SH0ES... KILLED

USR-2026-0008 On this data combination the CPL best fit is not uniquely selected: a five-parameter... PROVISIONAL

USR-2026-0009 The universe is spatially flat: Ω_k = +0.0025 ± 0.0019 with CMB+BAO+SN (1.3σ from zero);... PROVISIONAL

Provenance

upstream source ↗

citation: arXiv:2202.04077
license / terms: Public data release (GitHub); SH0ES calibration described in arXiv:2112.04510 (both arXiv IDs are cited in the on-disk README).
local directory: /Users/davidthompson/Desktop/Dark Energy/engine/data/external

Serving, honestly

Downloads are served directly from this server today; an object-storage mirror (Tigris) is planned and flips on via config. The upstream archive is always the canonical copy — cite it, not us. Anything we serve must match its published hash.