Pith Number

pith:Z6NTHK53

pith:2018:Z6NTHK532FR32MM6FNKHA462H7

not attested not anchored not stored refs pending

Probing black hole accretion in quasar pairs at high redshift

2), (2) INAF - Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, (3) INAF - Osservatorio Astronomico di Roma, (4) INAF - Osservatorio Astrofisico di Arcetri, (5) Department of Physics, 6), (6) Max-Planck-Institut fur Astronomie, (7) Dipartimento di Fisica "G. Occhialini", (8) Department of Astronomy, 9) ((1) Dipartimento di Fisica e Astronomia, (9) Center for Cosmology, A. Comastri (2), Astro-Particle Physics (CCAPP), Columbus, C. Vignali (1, E. Piconcelli (3), Firenze, Germany, G. Zamorani (2), Heidelberg, Italy, J. Hennawi (5, M. Dotti (7), M. Perna (4), R. Gilli (2), S. Mathur (8, The Ohio State University, Universita` di Bologna, Universita` di Milano-Bicocca, University of California, USA, USA)

arxiv:1803.08508 v1 · 2018-03-22 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z6NTHK532FR32MM6FNKHA462H7}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:19:20.124651Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf9b33abbbd163bd319e2b547073da3ff91ed0fc6085807f3eaf30d05d9706dd

Aliases

arxiv: 1803.08508 · arxiv_version: 1803.08508v1 · doi: 10.48550/arxiv.1803.08508 · pith_short_12: Z6NTHK532FR3 · pith_short_16: Z6NTHK532FR32MM6 · pith_short_8: Z6NTHK53

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/Z6NTHK532FR32MM6FNKHA462H7 \
  | 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: cf9b33abbbd163bd319e2b547073da3ff91ed0fc6085807f3eaf30d05d9706dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89b3deed40a2d4553bcfcd2c81a3d37a16a8bd6458c6c12539750209491c906c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-03-22T18:00:02Z",
    "title_canon_sha256": "a1ace7778a8385e8dfdefc805c4863bb8a2e358b4ba818bb991f072f31c9e2b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.08508",
    "kind": "arxiv",
    "version": 1
  }
}