Pith Number

pith:B4UAQ4YA

pith:2004:B4UAQ4YA6YSTA6HLNJKUBALE5F

not attested not anchored not stored refs pending

X-ray flares reveal mass and angular momentum of the Galactic Center black hole

(2) Laboratoire d'Astrophysique de Grenoble, B. Aschenbach (1), D. Porquet (1), France), Garching, Germany, Grenoble, N. Grosso (2), P. Predehl (1) ((1) Max-Planck-Institut fuer extraterrestrische Physik, Universite Joseph-Fourier

arxiv:astro-ph/0401589 v2 · 2004-01-28 · 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{B4UAQ4YA6YSTA6HLNJKUBALE5F}

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

Probing the sensitivity of CTAO-N LSTs observations at large zenith angles to the multi-TeV gamma-ray emission from the inner 10 parsecs of the Galactic Center

Receipt and verification

First computed	2026-07-04T16:42:56.065598Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f28087300f6253078eb6a55408164e9773d036b9efae8fdcad0d8285af8c823

Aliases

arxiv: astro-ph/0401589 · arxiv_version: astro-ph/0401589v2 · doi: 10.48550/arxiv.astro-ph/0401589 · pith_short_12: B4UAQ4YA6YST · pith_short_16: B4UAQ4YA6YSTA6HL · pith_short_8: B4UAQ4YA

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/B4UAQ4YA6YSTA6HLNJKUBALE5F \
  | 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: 0f28087300f6253078eb6a55408164e9773d036b9efae8fdcad0d8285af8c823

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23aaffdebfd5ba43be25b64774617bab6a6cf2571cda0db043c1c5850b4e5e8a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-01-28T13:17:30Z",
    "title_canon_sha256": "a16738f17e9e7685899786f3192b276798e29f622d8d89f5129a41e119be5655"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0401589",
    "kind": "arxiv",
    "version": 2
  }
}