Pith Number

pith:LEQYWJ6Q

pith:1999:LEQYWJ6QG36OZ32CKEJK4VIISX

not attested not anchored not stored refs pending

Viewing the Shadow of the Black Hole at the Galactic Center

Eric Agol (Johns Hopkins University), Fulvio Melia (The University of Arizona), Heino Falcke (MPIfR Bonn)

arxiv:astro-ph/9912263 v1 · 1999-12-14 · 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{LEQYWJ6QG36OZ32CKEJK4VIISX}

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

25 papers in Pith

Constitutive birefringence and critical curves in the rotating Garc\'ia--D\'iaz black hole

Polarization-Dependent Photon Propagation, Quasinormal Modes, and Gravitational Lensing in Higher-Curvature Effective Theories

Can finite-density QCD matter support a regular black hole core?

Shadow, acoustic redshift, and transfer observables of Lorentz-violating rotating acoustic black holes

Probing Effective Field Theory Corrections with Quasinormal Modes and Gravitational Lensing in Reissner-Nordstr\"om Black Holes

Receipt and verification

First computed	2026-07-04T16:12:00.722244Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

59218b27d036fcecef425112ae550895e4f687641c4d6045c8159061dc84c657

Aliases

arxiv: astro-ph/9912263 · arxiv_version: astro-ph/9912263v1 · doi: 10.48550/arxiv.astro-ph/9912263 · pith_short_12: LEQYWJ6QG36O · pith_short_16: LEQYWJ6QG36OZ32C · pith_short_8: LEQYWJ6Q

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/LEQYWJ6QG36OZ32CKEJK4VIISX \
  | 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: 59218b27d036fcecef425112ae550895e4f687641c4d6045c8159061dc84c657

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd30e00ae906f06a4897805188f17a6264dcae380cc809ebd26f11ad5d86ed32",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-12-14T09:29:57Z",
    "title_canon_sha256": "8a61a4ee65bc0ed6c069258e7f70624ea6ffeb8d0c74535e136a6e0f70b4069d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9912263",
    "kind": "arxiv",
    "version": 1
  }
}