Pith Number

pith:3OVATXWF

pith:1998:3OVATXWFREL4MTRLREDJD3DP57

not attested not anchored not stored refs pending

Quasars as Cosmological Probes: The Ionizing Continuum, Gas Metallicity and the EW-L Relation

Gary Ferland (UK), Jack Baldwin (CTIO), Kirk Korista (WMU)

arxiv:astro-ph/9805338 v1 · 1998-05-27 · 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{3OVATXWFREL4MTRLREDJD3DP57}

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

1 paper in Pith

Understanding the Broad-line Region of Active Galactic Nuclei with Photoionization. II. Slim disks, Self-shadowing, and BLR sizes

Receipt and verification

First computed	2026-07-04T16:06:42.637042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dbaa09dec58917c64e2b890691ec6fefd5d0c28623b25dc9c719ead5c070854f

Aliases

arxiv: astro-ph/9805338 · arxiv_version: astro-ph/9805338v1 · doi: 10.48550/arxiv.astro-ph/9805338 · pith_short_12: 3OVATXWFREL4 · pith_short_16: 3OVATXWFREL4MTRL · pith_short_8: 3OVATXWF

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/3OVATXWFREL4MTRLREDJD3DP57 \
  | 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: dbaa09dec58917c64e2b890691ec6fefd5d0c28623b25dc9c719ead5c070854f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78f64d37676d59880b67ce0fbaff91765869d1fb58bb5659257080cc66393256",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-05-27T21:51:26Z",
    "title_canon_sha256": "c4400aa5442eeaad92bb1d93afaa49579cd9664142e4b5ab1645de93ff2683ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9805338",
    "kind": "arxiv",
    "version": 1
  }
}