Pith Number

pith:YEYRDF5Q

pith:2000:YEYRDF5QYMVVC47SDA2LWREBEL

not attested not anchored not stored refs pending

The Discovery of a State Dependent Hard Tail in the X-ray Spectrum of the Luminous Z-source GX 17+2

A.N. Parmar, F. Frontera, G.L. Israel, J. Homan, L. Burderi, L. Stella, M. van der Klis, N. R. Robba, S. Campana, T. Di Salvo

arxiv:astro-ph/0009434 v1 · 2000-09-27 · 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{YEYRDF5QYMVVC47SDA2LWREBEL}

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

2 papers in Pith

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

The first IXPE view of the eclipsing ADC source 4U 1822-37

Receipt and verification

First computed	2026-07-04T16:17:12.448021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1311197b0c32b5173f21834bb448122d42330047252bcfdd400c5f1b8e3afe6

Aliases

arxiv: astro-ph/0009434 · arxiv_version: astro-ph/0009434v1 · doi: 10.48550/arxiv.astro-ph/0009434 · pith_short_12: YEYRDF5QYMVV · pith_short_16: YEYRDF5QYMVVC47S · pith_short_8: YEYRDF5Q

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/YEYRDF5QYMVVC47SDA2LWREBEL \
  | 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: c1311197b0c32b5173f21834bb448122d42330047252bcfdd400c5f1b8e3afe6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42ee76affdfe27e0d99bd11f4c8117ba21f24f29f359da1b00e91011bee185c9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-09-27T10:52:50Z",
    "title_canon_sha256": "e2d8440f9777f77f2e3f46b12a96d8ce70ce7e7580fed477378f17ee7371d00b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0009434",
    "kind": "arxiv",
    "version": 1
  }
}