Pith Number

pith:WZNFVH2D

pith:2026:WZNFVH2DAZJ6P2S35Z7NL7HFE3

not attested not anchored not stored refs resolved

Understanding corona and disk evolution in black hole X-ray binaries through a comprehensive study of their broadband variability and QPO characteristics

Biki Ram, Manoneeta Chakraborty

QPO time lags change sign at ~2 Hz for high-inclination black hole binaries, indicating a shift from elongated jet-like to compact corona.

arxiv:2605.17344 v1 · 2026-05-17 · astro-ph.HE

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\usepackage{pith}
\pithnumber{WZNFVH2DAZJ6P2S35Z7NL7HFE3}

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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

We report a sign change in the average QPO time lag around the QPO frequency of ~2 Hz for high inclination sources, during the hard-to-hard intermediate state transition. [...] Our results are consistent with a transition from an elongated jet-like corona to a compact corona and reveal vital clues about the dynamical evolution of the corona and disk.

C2weakest assumption

The classification of sources into high and low inclination is accurate and that the observed time lags directly trace corona geometry rather than other effects such as disk reflection or propagation delays.

C3one line summary

Comprehensive analysis of AstroSat data shows a sign change in QPO time lags at ~2 Hz for high-inclination sources, consistent with a transition from elongated jet-like to compact corona.

References

101 extracted · 101 resolved · 32 Pith anchors

[1] Broadband reflection spectroscopy of MAXI J1535-571 using AstroSat: Estimation of black hole mass and spin · doi:10.1146/annurev.astro.44.051905.092532

[2] Observational appearance 1973

[3] M., & Spurzem, R 2004 · doi:10.1111/j.1365-2966.2004.08384.x

[4] A two-temperature accretion disk model for Cygnus X-1: structure and spectrum. , keywords =. doi:10.1086/154162 , adsurl = · doi:10.1086/154162

[5] A Unified Description of the Timing Features of Accreting X-ray Binaries · doi:10.1086/340290

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T00:03:53.315699Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b65a5a9f430653e7ea5bee7ed5fce526d069f4f03f6c66ec36f9ef0fd94f0358

Aliases

arxiv: 2605.17344 · arxiv_version: 2605.17344v1 · doi: 10.48550/arxiv.2605.17344 · pith_short_12: WZNFVH2DAZJ6 · pith_short_16: WZNFVH2DAZJ6P2S3 · pith_short_8: WZNFVH2D

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/WZNFVH2DAZJ6P2S35Z7NL7HFE3 \
  | 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: b65a5a9f430653e7ea5bee7ed5fce526d069f4f03f6c66ec36f9ef0fd94f0358

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2016635d2043f5e417b899e18404b1bfe20a53dd7ff78bb4ce405648ca5dffe3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-05-17T09:31:05Z",
    "title_canon_sha256": "8d0737fe9d5bf05133513e7aa87c5068003d8eabbb78f8ff8d556fe0420f2757"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.17344",
    "kind": "arxiv",
    "version": 1
  }
}