Pith Number

pith:EA2HHCVI

pith:2026:EA2HHCVIUICPSVKILFDH3MZ345

not attested not anchored not stored refs pending

uGMRT and MeerKAT observation of RXCJ0232-4420: a quiet cluster with a giant radio halo

Pralay Biswas, Ramananda Santra, Ruta Kale, Viral Parekh

A cool-core galaxy cluster hosts an Mpc-scale giant radio halo sustained by minor-merger turbulence.

arxiv:2604.27123 v2 · 2026-04-29 · astro-ph.GA

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\usepackage{pith}
\pithnumber{EA2HHCVIUICPSVKILFDH3MZ345}

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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 presence of Mpc-scale emission in the cool-core cluster shows that such emission can arise in dynamically intermediate systems. Our results demonstrate that merger-driven turbulence, even from minor disturbances, can sustain cluster-wide particle re-acceleration without destroying the cool core.

C2weakest assumption

That the observed Mpc-scale radio emission is powered by merger-driven turbulence from minor disturbances rather than other mechanisms, and that the cluster's dynamical state is truly intermediate based on the survival of the cool core.

C3one line summary

A cool-core cluster hosts a giant radio halo with uniform spectral index and sublinear radio-X-ray correlation, indicating minor-merger turbulence can sustain Mpc-scale re-acceleration without destroying the core.

Receipt and verification

First computed	2026-06-02T02:04:53.519542Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2034738aa8a204f9554859467db33be76ddecab3f4b56e976334950667a57965

Aliases

arxiv: 2604.27123 · arxiv_version: 2604.27123v2 · doi: 10.48550/arxiv.2604.27123 · pith_short_12: EA2HHCVIUICP · pith_short_16: EA2HHCVIUICPSVKI · pith_short_8: EA2HHCVI

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/EA2HHCVIUICPSVKILFDH3MZ345 \
  | 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: 2034738aa8a204f9554859467db33be76ddecab3f4b56e976334950667a57965

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46833cb4b16a21c6e30c217a2fe7c5d7431de1dfc721d2462dc3fc900859874d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-04-29T19:23:16Z",
    "title_canon_sha256": "84691dcaa5ef5f3d6456723c240d410b8fcb5142cfbea38f6c77b3692c7ce720"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.27123",
    "kind": "arxiv",
    "version": 2
  }
}