Pith Number

pith:75XB7CAZ

pith:2026:75XB7CAZLRFZVEC3OUN6ADHZJU

not attested not anchored not stored refs resolved

The MeerKAT Massive Distant Clusters Survey: a search for diffuse radio emission in 30 massive SZ-selected clusters at $z > 1$

B. Partridge, C. Sif\'on, Dakalo G. Phuravhathu, D. Y. Klutse, J. van Marrewijk, K. Knowles, K. Moodley, M. Hilton, N. Oozeer, S. P. Sikhosana, T. Mroczkowski, U. Sureshkumar, Y. C. Perrott

Deep MeerKAT observations detect radio halos in 27% of massive galaxy clusters at z>1, exceeding most model predictions.

arxiv:2605.04645 v1 · 2026-05-06 · astro-ph.GA · astro-ph.CO

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\usepackage{pith}
\pithnumber{75XB7CAZLRFZVEC3OUN6ADHZJU}

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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

The halo detection rate in this high-redshift sample is lower than at intermediate redshift, but remains higher than the ≲10% occurrence generally predicted by theoretical models at z≳1.

C2weakest assumption

That the visual or quantitative identification of diffuse emission is complete and unbiased, and that the SZ-selected sample has no significant selection bias against clusters without mergers or with faint halos.

C3one line summary

MeerKAT observations detect radio halos in 27% of 30 massive clusters at z>1, a rate lower than at intermediate redshifts but above model predictions, with power-mass scaling similar to lower-z samples.

References

170 extracted · 170 resolved · 1 Pith anchors

[1] Fournier, Paul , title=. ApJ , fjournal=

[2] An important paper , journal=

[3] Another Unreal Paper , journal=

[4] A Last Unreal Paper , journal=

[6] arXiv e-prints , keywords = · doi:10.48550/arxiv.2402.06192

Receipt and verification

First computed	2026-05-27T14:06:45.519794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff6e1f88195c4b9a905b751be00cf94d3f99c3b5f4d0aa6e0a2518ff66981969

Aliases

arxiv: 2605.04645 · arxiv_version: 2605.04645v1 · doi: 10.48550/arxiv.2605.04645 · pith_short_12: 75XB7CAZLRFZ · pith_short_16: 75XB7CAZLRFZVEC3 · pith_short_8: 75XB7CAZ

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/75XB7CAZLRFZVEC3OUN6ADHZJU \
  | 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: ff6e1f88195c4b9a905b751be00cf94d3f99c3b5f4d0aa6e0a2518ff66981969

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff260745f9cfa3c9a58f49be66a7e5c326ab9f5b8bcaa6962cb22491b274e5b0",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-05-06T08:46:27Z",
    "title_canon_sha256": "92b15f5d27cd759fa29311a82707ddbeb21d74bff6efbdc6da619102f15e4b43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.04645",
    "kind": "arxiv",
    "version": 1
  }
}