Pith Number

pith:HGHECG7V

pith:1997:HGHECG7VC6D6C5ZWRQDZGMCO2Y

not attested not anchored not stored refs pending

Special relativistic effects on the strength of the fluorescent K-alpha iron line from black hole accretion disks

A.C.Fabian (IoA, Boulder), Cambridge), C.S.Reynolds (JILA

arxiv:astro-ph/9707082 v1 · 1997-07-07 · 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{HGHECG7VC6D6C5ZWRQDZGMCO2Y}

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	2026-05-18T01:22:58.719420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

398e411bf51787e177368c0793304ed626850b9f194857a9ca9086118cb966e3

Aliases

arxiv: astro-ph/9707082 · arxiv_version: astro-ph/9707082v1 · doi: 10.48550/arxiv.astro-ph/9707082 · pith_short_12: HGHECG7VC6D6 · pith_short_16: HGHECG7VC6D6C5ZW · pith_short_8: HGHECG7V

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/HGHECG7VC6D6C5ZWRQDZGMCO2Y \
  | 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: 398e411bf51787e177368c0793304ed626850b9f194857a9ca9086118cb966e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c96b4a9886bc4833e003980d626b19cc197b0714b2af6a210817b1632a4854c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-07-07T16:02:43Z",
    "title_canon_sha256": "a7a5e849f4caf58c902ce297576661e630fbb3f0dbed6c7a44b440b3dc4390a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9707082",
    "kind": "arxiv",
    "version": 1
  }
}