Pith Number

pith:DK4JKYWE

pith:2026:DK4JKYWEOHCYQJOSXLFM4UIOED

not attested not anchored not stored refs resolved

The Homogeneous MeerKAT and Swift/XRT X-ray Binary Radio:X-ray Plane

Alex Andersson, Andrew Hughes, Arash Bahramian, David Williams-Baldwin, Evangelia Tremou, Francesco Carotenuto, Fraser J. Cowie, Itumeleng Monaleng, Jakob van den Eijnden, James Matthews, Joe Bright, Justine Crook-Mansour, Katie Savard, Kelebogile Gasealahwe, Lauren Rhodes, Melania Del Santo, Noa Grollimund, Patrick A. Woudt, Payaswini Saikia, Rob Fender, Sara Motta, St\'ephane Corbel, Thomas D. Russell, Xian Zhang, Zuobin Zhang

MeerKAT and Swift data produce the largest homogeneous radio:X-ray luminosity plane for X-ray binaries

arxiv:2605.14003 v1 · 2026-05-13 · astro-ph.HE

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\pithnumber{DK4JKYWEOHCYQJOSXLFM4UIOED}

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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

Using these data, we construct the largest, observationally homogeneous X-ray binary radio:X-ray plane to date.

C2weakest assumption

That the MeerKAT and Swift/XRT measurements can be combined into a truly homogeneous plane without residual calibration or frequency-conversion systematics that affect the reported tracks.

C3one line summary

A homogeneous MeerKAT-Swift dataset of nearly 1000 radio and X-ray points from X-ray binaries shows persistent soft-state radio emission and yields the largest uniform radio:X-ray plane.

References

21 extracted · 21 resolved · 1 Pith anchors

[1] Transient Black Hole Binaries 2024 · doi:10.5281/zenodo.7059313

[2] to perform flag- ging, calibration, and imaging. When using this pipeline, since we are primarily interested in continuum emission, the recorded visi- bilities (taken in the 32K correlator mode) are f 2022

[3] and verncross-sections (Verner et al. 1996). Since our goal was to esti- mateunabsorbedfluxesratherthandetailedspectralparameters,sim- plespectralmodelsweresufficient.Weemployedpower-lawmodels (tbabs* 1996

[4] – though cross-instrument calibration differences may introduce discrepan- cies. Apparent epoch-to-epoch variations in𝑁𝐻 may reflect instru- mentalsystematicsormodellingsimplifications,butcouldalsoind 2016

[5] or very long baseline interferome- try (VLBI; e.g., Atri et al. 2020). For Gaia parallaxes, distances are generallyinferredwithinaBayesianframeworkthatincorporatesap- propriatepriors(e.g.,forGalacticX 2020

Receipt and verification

First computed	2026-05-17T23:39:13.138741Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ab89562c471c58825d2bacace510e20fa5158cdbe446375686365db8c0cf764

Aliases

arxiv: 2605.14003 · arxiv_version: 2605.14003v1 · doi: 10.48550/arxiv.2605.14003 · pith_short_12: DK4JKYWEOHCY · pith_short_16: DK4JKYWEOHCYQJOS · pith_short_8: DK4JKYWE

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/DK4JKYWEOHCYQJOSXLFM4UIOED \
  | 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: 1ab89562c471c58825d2bacace510e20fa5158cdbe446375686365db8c0cf764

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de82904860fc340a1b3f8ded5ad5304986b7e11c32454434a858927876eb4dfd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-05-13T18:09:40Z",
    "title_canon_sha256": "6895901cc7475786366cbb6b8bbeebfce554e949cdbdb0701a560b6a1daec432"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.14003",
    "kind": "arxiv",
    "version": 1
  }
}