Pith Number

pith:TOIMMXMN

pith:2021:TOIMMXMNECDVL4DPBJDDBSMO5E

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A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team

Adam G. Riess, Alexei V. Filippenko, Benjamin E. Stahl, Dan Scolnic, David O. Jones, Dillon Brout, Gagandeep Anand, John MacKenty, Louise Breuval, Lucas M. Macri, Samantha Hoffmann, Saurabh W. Jha, Stefano Casertano, Thomas G. Brink, W. D'Arcy Kenworthy, Weikang Zheng, Wenlong Yuan, Yukei Murakami

Local Hubble constant measured at 73.04 km/s/Mpc with 1 km/s/Mpc uncertainty, differing by 5 sigma from Planck LCDM prediction.

arxiv:2112.04510 v3 · 2021-12-08 · astro-ph.CO

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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

Our baseline result from the Cepheid-SN sample is H0=73.04+-1.04 km/s/Mpc, which includes systematics and lies near the median of all analysis variants. We find a 5-sigma difference with H0 predicted by Planck+LCDM, with no indication this arises from measurement errors or analysis variations considered to date.

C2weakest assumption

That residual systematics in Cepheid photometry due to crowding, metallicity effects, or SN Ia standardization (including host property matching) have been fully captured by the ~70 analysis variants and do not bias the central H0 value.

C3one line summary

The local Hubble constant is measured as 73.04 ± 1.04 km/s/Mpc from Cepheid-calibrated Type Ia supernovae, showing a 5-sigma discrepancy with the Planck+LCDM prediction.

References

144 extracted · 144 resolved · 4 Pith anchors

[1] Anand, G. S., Tully, R. B., Rizzi, L., Riess, A. G., & Yuan, W. 2021, arXiv, arXiv:2108.00007 2021

[2] 1989, GeoCoA, 53, 197 1989

[3] Anderson, R. I. 2019, A&A, 631, A165 2019

[4] I., & Riess, A 2018

[5] I., Sahlmann, J., Holl, B., et al 2015

Formal links

2 machine-checked theorem links

Cited by

127 papers in Pith

A hybrid method for reconstruction of the equation of state of dark energy and its application to Pantheon+SH0ES data

A solid unification of the dark sector

Redshift-Dependent Intrinsic Dispersion in the Quasar UV/X-ray Luminosity Relation

An Interplay Between Fractional Calculus and Holographic Dark Energy

Interplay of Holographic and New Agegraphic Dark Energy in Cosmology: A hybrid dark energy model from a generalized length-time cut-off

Receipt and verification

First computed	2026-07-05T04:45:14.168014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b90c65d8d208755f06f0a4630c98ee91b63a73cf3835b56873b3d27d743bd04

Aliases

arxiv: 2112.04510 · arxiv_version: 2112.04510v3 · doi: 10.48550/arxiv.2112.04510 · pith_short_12: TOIMMXMNECDV · pith_short_16: TOIMMXMNECDVL4DP · pith_short_8: TOIMMXMN

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/TOIMMXMNECDVL4DPBJDDBSMO5E \
  | 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: 9b90c65d8d208755f06f0a4630c98ee91b63a73cf3835b56873b3d27d743bd04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23c1880c3304a8a6ccf84aba9e22ae73d09a1cf8688d426440d9924b47ddad9a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-12-08T19:00:02Z",
    "title_canon_sha256": "1bd472fa2772cf864639e361a30364974391842e3456e011974fd202622a58d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.04510",
    "kind": "arxiv",
    "version": 3
  }
}