Pith Number

pith:4D2OB63T

pith:2002:4D2OB63T6JJBV42RF2FN5GUHMH

not attested not anchored not stored refs pending

Unabsorbed Seyfert 2 galaxies

Francesca Panessa, Loredana Bassani

arxiv:astro-ph/0208496 v1 · 2002-08-28 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4D2OB63T6JJBV42RF2FN5GUHMH}

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.

Cited by

2 papers in Pith

The emergence of X-ray emission lines during relativistic radio-jet formation in the changing-look active galactic nucleus 1ES 1927+654

OzSSy1: The Australian Southern Seyfert-1 Spectroscopic Atlas and Catalogue at z < 0.1

Receipt and verification

First computed	2026-07-04T16:30:41.801569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0f4e0fb73f2521af3512e8ade9a8761e63a5070d441dfe8570cf0eed7d0dd07

Aliases

arxiv: astro-ph/0208496 · arxiv_version: astro-ph/0208496v1 · doi: 10.48550/arxiv.astro-ph/0208496 · pith_short_12: 4D2OB63T6JJB · pith_short_16: 4D2OB63T6JJBV42R · pith_short_8: 4D2OB63T

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/4D2OB63T6JJBV42RF2FN5GUHMH \
  | 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: e0f4e0fb73f2521af3512e8ade9a8761e63a5070d441dfe8570cf0eed7d0dd07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26205c7e11a27ffdeb2c1895eb4b97939f15ae1595ff7cd28c915a098aeec3ed",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-08-28T10:47:18Z",
    "title_canon_sha256": "879bb678444aa0c7c40991fb66ad3cf2945f82163a72e22e23aba88a342d0dbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0208496",
    "kind": "arxiv",
    "version": 1
  }
}