Pith Number

pith:VR74A22A

pith:2018:VR74A22AFFQYBZBIW2442WVTK3

not attested not anchored not stored refs pending

X-ray perspective of Narrow-line Seyfert 1 galaxies

L. C. Gallo (Saint Mary's University)

arxiv:1807.09838 v1 · 2018-07-25 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VR74A22AFFQYBZBIW2442WVTK3}

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

Reverberation in the Narrow Fe K${\alpha}$ Line in the Seyfert Galaxy NGC 4151 with XRISM

Receipt and verification

First computed	2026-05-18T00:09:46.450741Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac7fc06b40296180e428b6b9cd5ab356e740c974569996e1906036a8c838d386

Aliases

arxiv: 1807.09838 · arxiv_version: 1807.09838v1 · doi: 10.48550/arxiv.1807.09838 · pith_short_12: VR74A22AFFQY · pith_short_16: VR74A22AFFQYBZBI · pith_short_8: VR74A22A

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/VR74A22AFFQYBZBIW2442WVTK3 \
  | 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: ac7fc06b40296180e428b6b9cd5ab356e740c974569996e1906036a8c838d386

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9212243d7d38f4ddbd896f688677aae13999697365e1b5afd548346b62397d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-07-25T20:16:39Z",
    "title_canon_sha256": "57ce7b84f498f557b38b2da087d8652f1b641c4367d95a1b53e94efa6d190965"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.09838",
    "kind": "arxiv",
    "version": 1
  }
}