Pith Number

pith:LANYI3I7

pith:2025:LANYI3I7CEHCAUOMXOPNCHCJN2

not attested not anchored not stored refs resolved

Aql X-1 from dawn 'til dusk: the early rise, fast state transition and decay of its 2024 outburst

A. Anitra, \'A. Jurado-L\'opez, A. Marino, A. Patruno, C. Jin, D.M. Russell, E. Parent, F. Coti Zelati, F. Lewis, G.B. Zhang, G. Illiano, G. Mastroserio, H. Feng, J. Homan, J.U. Ness, K. Alabarta, L. Ji, L. Tao, M.C. Baglio, M. Imbrogno, M.J. Liu, M. Veresvarska, N. Rea, P. Saikia, R. Ma, R. Soria, S.E. Motta, S. Fijma, S. Guillot, S.K. Rout, T. Di Salvo, T.D. Russell, W. Yuan, X.P. Xu, Y. Cavecchi, Y.F. Huang, Y.F. Liang, Y.L. Wang, Z.J. Zhang

The neutron star LMXB Aql X-1 displayed a rapid 12-hour hard-to-soft state transition two weeks after the optical start of its 2024 outburst.

arxiv:2511.16437 v2 · 2025-11-20 · astro-ph.HE

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\usepackage{pith}
\pithnumber{LANYI3I7CEHCAUOMXOPNCHCJN2}

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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.

Claims

C1strongest claim

the source underwent a very rapid, about 12-h long, transition from the hard to the soft state about two weeks after the optical onset of the outburst

C2weakest assumption

That the detected optical rise and subsequent X-ray activity belong to the same single outburst event with accurate cross-instrument timing alignment

C3one line summary

Multi-wavelength data on Aql X-1's 2024 outburst reveal an optical lead of up to 13 days over X-rays and a 12-hour hard-to-soft state transition.

References

11 extracted · 11 resolved · 0 Pith anchors

[1] " * write output.state after.block = add.period write newline

[2] write newline

[3] 1966, in Stellar Evolution, ed.\ R 1966

[4] 1988, A&A, 200, 58 1988

[5] Cox, J. P. 1980, Theory of Stellar Pulsation (Princeton University Press, Princeton) 165 1980

Formal links

2 machine-checked theorem links

Cited by

1 paper in Pith

Einstein Probe discovery of EP J171159.4-333253: an eclipsing neutron star low-mass X-ray binary with clocked bursts

Receipt and verification

First computed	2026-06-19T16:10:32.606240Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

581b846d1f110e2051ccbb9ed11c496ea9d860a669a71de2892901a09da7edb6

Aliases

arxiv: 2511.16437 · arxiv_version: 2511.16437v2 · doi: 10.48550/arxiv.2511.16437 · pith_short_12: LANYI3I7CEHC · pith_short_16: LANYI3I7CEHCAUOM · pith_short_8: LANYI3I7

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/LANYI3I7CEHCAUOMXOPNCHCJN2 \
  | 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: 581b846d1f110e2051ccbb9ed11c496ea9d860a669a71de2892901a09da7edb6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f53b3eafba3391e9c9da49a3a489f5009938d60279b674b9eb718eac0f1e0b7a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2025-11-20T15:05:47Z",
    "title_canon_sha256": "809c9b03821f8d404ae34230b821ca3f51f5eb458eaaec20435fae061212e25d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2511.16437",
    "kind": "arxiv",
    "version": 2
  }
}