Pith Number

pith:TWJH4WWL

pith:2009:TWJH4WWLSHPS6SPUAYID3R5PCP

not attested not anchored not stored refs pending

The black hole mass, Eddington ratio, and M_bh-\sigma_[O III] relation in young radio galaxies

Qingwen Wu (KASI)

arxiv:0905.3663 v1 · 2009-05-22 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TWJH4WWLSHPS6SPUAYID3R5PCP}

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	2026-05-18T02:13:38.011442Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d927e5acb91df2f49f406103dc7af13eda2a315b878c2b7861f727412f1f9d2

Aliases

arxiv: 0905.3663 · arxiv_version: 0905.3663v1 · doi: 10.48550/arxiv.0905.3663 · pith_short_12: TWJH4WWLSHPS · pith_short_16: TWJH4WWLSHPS6SPU · pith_short_8: TWJH4WWL

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/TWJH4WWLSHPS6SPUAYID3R5PCP \
  | 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: 9d927e5acb91df2f49f406103dc7af13eda2a315b878c2b7861f727412f1f9d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f433db3f461287185d06923295b8ec44bf3e66b07fc4efac3b601e2c13c8f696",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-05-22T11:15:31Z",
    "title_canon_sha256": "40b36e77a0375f8a14b48a6c34412ebbb05c9a36b9e6bcbf8b3e9b13ab939636"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.3663",
    "kind": "arxiv",
    "version": 1
  }
}