Pith Number

pith:27TPJRH4

pith:2014:27TPJRH4C4SPMJ2XW72DWKAPQW

not attested not anchored not stored refs pending

Photon Regions and Shadows of Kerr-Newman-NUT Black Holes with a Cosmological Constant

Arne Grenzebach, Claus L\"ammerzahl, Volker Perlick

arxiv:1403.5234 v2 · 2014-03-20 · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{27TPJRH4C4SPMJ2XW72DWKAPQW}

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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

6 papers in Pith

Shaving off soft hairs and the black hole image memory effect

Photon Surfaces in Higher-Curvature Gravity: Implications for Quasinormal Modes and Gravitational Lensing

A note on methods for computing the critical curve of Kerr-like black holes

Locality versus Fock-space structure in East-type models

Probing Kalb-Ramond gravity with charged rotating black holes: constraints from EHT observations

Receipt and verification

First computed	2026-05-18T02:49:38.608033Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7e6f4c4fc1724f62757b7f43b280f85b80ed1e9909f25105af25f3d66044531

Aliases

arxiv: 1403.5234 · arxiv_version: 1403.5234v2 · doi: 10.48550/arxiv.1403.5234 · pith_short_12: 27TPJRH4C4SP · pith_short_16: 27TPJRH4C4SPMJ2X · pith_short_8: 27TPJRH4

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/27TPJRH4C4SPMJ2XW72DWKAPQW \
  | 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: d7e6f4c4fc1724f62757b7f43b280f85b80ed1e9909f25105af25f3d66044531

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1a502a7b13c94be07006dabf4d32b85c9ada1d6302d640d49c6e6a08525db23",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-03-20T19:13:38Z",
    "title_canon_sha256": "a11d90c929e52f42ee144fb8e376fa5b071794b2ad8a18393fa5f43d4ce4d3c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.5234",
    "kind": "arxiv",
    "version": 2
  }
}