{"paper":{"title":"Constraints on pre-SN outbursts from the progenitor of SN 2023ixf using the Large Binocular Telescope","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"C. S. Kochanek, J. M. M. Neustadt, M. Rizzo Smith","submitted_at":"2023-06-09T18:00:00Z","abstract_excerpt":"The progenitor of SN 2023ixf was a $\\sim$10$^{4.8}$ to $10^{5.0}\\rm ~L_\\odot$ star ($\\sim$9 to $14 \\rm~M_\\odot$ at birth) obscured by a dusty $\\dot{M} \\simeq 10^{-5} \\rm~M_\\odot~yr^{-1}$ wind with a visual optical depth of $\\tau_V \\simeq 13$. This is required by the progenitor SED, the post-SN X-ray and H$\\alpha$ luminosities, and the X-ray column density estimates. In Large Binocular Telescope (LBT) data spanning 5600 to 400 d before the SN, there is no evidence for optical variability at the level of $\\sim$10$^3\\rm~L_\\odot$ in $R$ band, roughly 3 times the predicted luminosity of the obscure"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.06162","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/2306.06162/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"}