Pith Number

pith:LJRKFT32

pith:2009:LJRKFT32K5SMU656XIXV2762G7

not attested not anchored not stored refs pending

Unabsorbed Seyfert 2 galaxies: the case of "naked" AGN

A. Corral, F. Gastaldello, F.J. Carrera, F. Panessa, G. Matt, L. Bassani, L. Monaco, S. Bianchi, X. Barcons

arxiv:0906.1974 v1 · 2009-06-10 · 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{LJRKFT32K5SMU656XIXV2762G7}

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	2026-05-18T02:13:20.923112Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a62a2cf7a5764ca7bbeba2f5d7fda37da95c969a93ff0fe4aed6c5021c0ac1e

Aliases

arxiv: 0906.1974 · arxiv_version: 0906.1974v1 · doi: 10.48550/arxiv.0906.1974 · pith_short_12: LJRKFT32K5SM · pith_short_16: LJRKFT32K5SMU656 · pith_short_8: LJRKFT32

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/LJRKFT32K5SMU656XIXV2762G7 \
  | 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: 5a62a2cf7a5764ca7bbeba2f5d7fda37da95c969a93ff0fe4aed6c5021c0ac1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe1b31f66a92ba63104d718747c9b9e2f1ac04bd210765f2143b71b70bc7e444",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-06-10T16:59:40Z",
    "title_canon_sha256": "bd224b96d06258edaf028ff53c3ad9843dfd0a0358ac9252b46561f7cc09a8e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.1974",
    "kind": "arxiv",
    "version": 1
  }
}