Pith Number

pith:6FQFMVAF

pith:2007:6FQFMVAFAW6ELKRUPJ2RPSDPKP

not attested not anchored not stored refs pending

Determination of Black Hole Mass in Cyg X-1 by Scaling of Spectral Index-QPO Frequency Correlation

Lev Titarchuk, Nickolai Shaposhnikov

arxiv:astro-ph/0703441 v1 · 2007-03-16 · 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{6FQFMVAFAW6ELKRUPJ2RPSDPKP}

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

Quasi-Periodic Oscillations due to radiative feedback mechanism between the disc and corona

Receipt and verification

First computed	2026-05-18T04:29:05.589880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f16056540505bc45aa347a7517c86f53c0f7e5b99fed822de2642a1f296480ec

Aliases

arxiv: astro-ph/0703441 · arxiv_version: astro-ph/0703441v1 · doi: 10.48550/arxiv.astro-ph/0703441 · pith_short_12: 6FQFMVAFAW6E · pith_short_16: 6FQFMVAFAW6ELKRU · pith_short_8: 6FQFMVAF

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/6FQFMVAFAW6ELKRUPJ2RPSDPKP \
  | 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: f16056540505bc45aa347a7517c86f53c0f7e5b99fed822de2642a1f296480ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b2c5f8eafddf93afd94c82f686780cb1790d31264bbcd32e7562396fcf4eaf6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-03-16T14:55:27Z",
    "title_canon_sha256": "8c1240bbda6c9c006594e517ea6075be7a914feb8267e7d4f74da8f73ca3d77f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0703441",
    "kind": "arxiv",
    "version": 1
  }
}