Pith Number

pith:MUBUTN6R

pith:2013:MUBUTN6RCR6ECVP3AJFOA3CJZN

not attested not anchored not stored refs pending

A detailed study of the modulation of the optical light from Sk160/SMC X-1

A. Udalski (Warsaw), J. A. Orosz (SDSU), M. J. Coe (Southampton), R. Angus (Southampton)

arxiv:1305.0439 v2 · 2013-05-02 · 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{MUBUTN6RCR6ECVP3AJFOA3CJZN}

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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

Optical Super-orbital Modulation of SMC X-1: Disk Precession and a Revised Pulsar Mass

Receipt and verification

First computed	2026-05-18T01:50:13.192033Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

650349b7d1147c4155fb024ae06c49cb7f0b0e99c41179a3408f4ad8801cd434

Aliases

arxiv: 1305.0439 · arxiv_version: 1305.0439v2 · doi: 10.48550/arxiv.1305.0439 · pith_short_12: MUBUTN6RCR6E · pith_short_16: MUBUTN6RCR6ECVP3 · pith_short_8: MUBUTN6R

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/MUBUTN6RCR6ECVP3AJFOA3CJZN \
  | 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: 650349b7d1147c4155fb024ae06c49cb7f0b0e99c41179a3408f4ad8801cd434

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e4cbee3f7eb97e3b593ba29eb6519be125a44d9c8f0b590c90bce86dceb0c29",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-05-02T14:18:10Z",
    "title_canon_sha256": "8c15ad45c9ca8f543484a992081a4e48e6798f4479bf5b6a2af6dde6d9790a62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0439",
    "kind": "arxiv",
    "version": 2
  }
}