Pith Number

pith:4ZPELMTG

pith:2003:4ZPELMTGKMK7JGZNEIWN2FMW42

not attested not anchored not stored refs pending

Hard X-ray Flares Preceding Soft X-ray Outbursts in Aquila X-1: A Link between Neutron Star and Black Hole State Transitions

Marc Klein-Wolt, Michiel van der Klis (University of Amsterdam), Rob Fender, Wenfei Yu

arxiv:astro-ph/0304134 v2 · 2003-04-08 · 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{4ZPELMTGKMK7JGZNEIWN2FMW42}

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

Tracing the outburst decay of soft X-ray transients Aql X-1 and 4U 1608-52 with XSPECT

Receipt and verification

First computed	2026-07-04T16:36:48.928597Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e65e45b2665315f49b2d222cdd1596e6ae1236456ef22f1257c147987f7eb5d5

Aliases

arxiv: astro-ph/0304134 · arxiv_version: astro-ph/0304134v2 · doi: 10.48550/arxiv.astro-ph/0304134 · pith_short_12: 4ZPELMTGKMK7 · pith_short_16: 4ZPELMTGKMK7JGZN · pith_short_8: 4ZPELMTG

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/4ZPELMTGKMK7JGZNEIWN2FMW42 \
  | 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: e65e45b2665315f49b2d222cdd1596e6ae1236456ef22f1257c147987f7eb5d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f0b6684c91a2b9b1d69bb5bb4eec0e6d32e7ff4460412389e91ecae2b6cc688",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-04-08T08:19:20Z",
    "title_canon_sha256": "bd884d013d06319c8da43a8b75cb93afa20a5a37a16f40d8326223f6e2a68c49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0304134",
    "kind": "arxiv",
    "version": 2
  }
}