{"paper":{"title":"The Homogeneous MeerKAT and Swift/XRT X-ray Binary Radio:X-ray Plane","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"MeerKAT and Swift data produce the largest homogeneous radio:X-ray luminosity plane for X-ray binaries","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"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","submitted_at":"2026-05-13T18:09:40Z","abstract_excerpt":"During the hard and quiescent spectral states in X-ray binaries, a non-linear correlation is observed between radio and X-ray luminosities, providing a valuable tool to probe the connection between accretion and jet production. This relation was originally thought to define a single 'standard' correlation spanning several orders of magnitude in X-ray luminosity, and was extended to active galactic nuclei by including a mass term. However, subsequent studies revealed a more complex picture, with some sources deviating from the standard correlation and instead populating distinct tracks. To date"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Using these data, we construct the largest, observationally homogeneous X-ray binary radio:X-ray plane to date.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"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.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"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.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"MeerKAT and Swift data produce the largest homogeneous radio:X-ray luminosity plane for X-ray binaries","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"700a712b396e3caf21b7aebe892bebb72bb5328d8b002332a83500d406d36596"},"source":{"id":"2605.14003","kind":"arxiv","version":1},"verdict":{"id":"03e0eac8-e286-4f22-b143-8cd2c2704d66","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-15T02:52:51.547964Z","strongest_claim":"Using these data, we construct the largest, observationally homogeneous X-ray binary radio:X-ray plane to date.","one_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.","pipeline_version":"pith-pipeline@v0.9.0","weakest_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.","pith_extraction_headline":"MeerKAT and Swift data produce the largest homogeneous radio:X-ray luminosity plane for X-ray binaries"},"references":{"count":21,"sample":[{"doi":"10.5281/zenodo.7059313","year":2024,"title":"Transient Black Hole Binaries","work_id":"e6945513-13af-43cb-ade0-50dbd192f3ec","ref_index":1,"cited_arxiv_id":"1603.07872","is_internal_anchor":true},{"doi":"","year":2022,"title":"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","work_id":"3a365c51-9337-4b67-accf-233d5af934bd","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1996,"title":"and verncross-sections (Verner et al. 1996). Since our goal was to esti- mateunabsorbedfluxesratherthandetailedspectralparameters,sim- plespectralmodelsweresufficient.Weemployedpower-lawmodels (tbabs*","work_id":"7e08b892-f231-46fe-bd6e-58634a75d384","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2016,"title":"– though cross-instrument calibration differences may introduce discrepan- cies. Apparent epoch-to-epoch variations in𝑁𝐻 may reflect instru- mentalsystematicsormodellingsimplifications,butcouldalsoind","work_id":"a3124ea7-bcd2-4180-9695-34e697b9a973","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2020,"title":"or very long baseline interferome- try (VLBI; e.g., Atri et al. 2020). 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