Pith Number

pith:N74KLZUJ

pith:2015:N74KLZUJPWPCGWXFDLLWAWTBHL

not attested not anchored not stored refs pending

Gamma rays from the quasar PKS 1441+25: story of an escape

A. Archer, A. Barnacka, A. C. S. Readhead (OVRO), A. Falcone, A. Flinders, A. Furniss, A. J. Drake, A. Mahabal (CRTS), A. McCann, A. N. Otte, A. O'Faol\'ain de Bhr\'oithe, A. Petrashyk, A. Popkow, A. U. Abeysekara, A. Weinstein, A. Wilhelm, A. W. Smith, B. Shappee (ASAS-SN), B. Zitzer (VERITAS), C. A. Johnson, C. S. Kochanek, D. A. Williams, D. Hanna, D. Kieda, D. Nieto, D. Staszak, E. Pueschel, E. Roache, F. Krennrich, G. Gyuk, G. H. Gillanders, G. H. Sembroski, G. Maier, G. M. Madejski (NuSTAR), G. Ratliff, G. T. Richards, H. Fleischhack, H. J. Dickinson, I. Telezhinsky, J. Biteau, J. D. Eisch, J. Dumm, J. Grube, J. H. Buckley, J. Holder, J. L. Christiansen, J. L. Prieto, J. L. Richards, J. P. Finley, J. Quinn, J. Rousselle, J. S. Perkins, J. Tyler, J. V Cardenzana, J. V. Tucci, K. Meagher, K. Ragan, K. Shahinyan, K. Z. Stanek, L. Ciupik, L. Fortson, M. Cerruti, M. Errando, M. H\"utten, M. J. Graham, M. J. Lang, M. Krause, M. P. Connolly, M. Pohl, M. Santander, N. H{\aa}kansson, N. Kelley-Hoskins, N. Park, N. W. Todd, O. M. Weiner, P. Coppi, P. Fortin, P. Kaaret, P. Kar, P. Moriarty, P. S. Smith (SPOL), P. T. Reynolds, Q. Feng, R. A. Ong, R. A. Reeves, R. Bird, R. Mukherjee, S. Archambault, S. G. Djorgovski, S. Griffin, S. Kumar, S. McArthur, S. P. Wakely, S. Vincent, T. Aune, T. B. Humensky, T. Hovatta, T. J. Pearson, T. W.-S. Holoien, V. Bugaev, V. V. Vassiliev, W. Benbow, W. Cui, W. Max-Moerbeck, X. Chen, Y. Khassen

arxiv:1512.04434 v1 · 2015-12-14 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N74KLZUJPWPCGWXFDLLWAWTBHL}

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.

Receipt and verification

First computed	2026-05-18T01:23:53.773592Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ff8a5e6897d9e235ae51ad7605a613af354758ab7f870bc0eb4facc61eb9807

Aliases

arxiv: 1512.04434 · arxiv_version: 1512.04434v1 · doi: 10.48550/arxiv.1512.04434 · pith_short_12: N74KLZUJPWPC · pith_short_16: N74KLZUJPWPCGWXF · pith_short_8: N74KLZUJ

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/N74KLZUJPWPCGWXFDLLWAWTBHL \
  | 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: 6ff8a5e6897d9e235ae51ad7605a613af354758ab7f870bc0eb4facc61eb9807

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b73dfc1294520c62b232f6b8690532013d96f7ddf60067ce79d8f78dd6bf675c",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-12-14T18:00:00Z",
    "title_canon_sha256": "b4541cb9dfa9386ce6da8b0e1486a798b19062b154ee51953c8231b8ea3d97e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.04434",
    "kind": "arxiv",
    "version": 1
  }
}