{"paper":{"title":"The spectral state transition of Mkn 590, a potential link between AGNs and X-ray binaries?","license":"http://creativecommons.org/licenses/by-sa/4.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"A. Borkar, A. G. Markowitz, A. Rozanska, B. Palit, D. Lawther, G. Walsh, J. J. Ruan, K. X. Lu, M. Sniegowska, M. Vestergaard, T. Saha","submitted_at":"2026-02-19T17:28:19Z","abstract_excerpt":"Using the decade-long multi-band \\textit{Swift} observations of the changing look AGN Markarian~590, we capture a clear state transition associated with its recent changing look event. Using the X-ray loudness parameter $\\aox$, we track this evolution in real time as a probe of the disk-corona geometry. The $\\aox$ follows a pronounced \\lq V\\rq-shaped dependence on Eddington ratio $\\eddfrac$, with a statistically significant break at $\\eddfrac =0.021\\pm0.008$, consistent with thresholds identified in population studies of changing look quasars. This behavior is indicative of a change in the inn"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2602.17572","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2602.17572/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}