Pith Number

pith:ZFMPNZJO

pith:2009:ZFMPNZJOC2NLDYIEF6KOYUZPJG

not attested not anchored not stored refs pending

Radio Mode Outbursts in Giant Elliptical Galaxies

(2) MPA, 3), (3) IKI, (4) Perimeter), (4) U Waterloo, 5), Brian McNamara (4, Christine Jones (1), Eugene Churazov (2, Laurence David (1), Paul Nulsen (1), Stephen Murray (1) ((1) CfA, William Forman (1)

arxiv:0909.1809 v1 · 2009-09-09 · astro-ph.GA · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZFMPNZJOC2NLDYIEF6KOYUZPJG}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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.

Receipt and verification

First computed	2026-05-18T02:11:57.834244Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c958f6e52e169ab1e1042f94ec532f49bbfc6530d51cb67023b4ffc7e845f96e

Aliases

arxiv: 0909.1809 · arxiv_version: 0909.1809v1 · doi: 10.48550/arxiv.0909.1809 · pith_short_12: ZFMPNZJOC2NL · pith_short_16: ZFMPNZJOC2NLDYIE · pith_short_8: ZFMPNZJO

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/ZFMPNZJOC2NLDYIEF6KOYUZPJG \
  | 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: c958f6e52e169ab1e1042f94ec532f49bbfc6530d51cb67023b4ffc7e845f96e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d74cb1bd5ddbb755826fc5528f4061762ee3be948773d25a81b5f4c91178a26",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-09-09T20:05:35Z",
    "title_canon_sha256": "c554d7c42dce4a057b5d3bde33b7978393e93724c8f8716b6736480e99070abb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.1809",
    "kind": "arxiv",
    "version": 1
  }
}