{"paper":{"title":"High-mass binary black hole mergers from detailed binary evolution models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Abhishek Chattaraj, Anarya Ray, Elizabeth Teng, Jeff J. Andrews, Max M. Briel, Michael Zevin, Monica Gallegos-Garcia, Olcay B{\\i}y{\\i}kl{\\i}, Philipp M. Srivastava, Seth Gossage, Tassos Fragos, Vicky Kalogera, Zepei Xing","submitted_at":"2026-07-30T10:08:21Z","abstract_excerpt":"Gravitational-wave observations reveal a population of binary black hole (BBH) mergers with primary masses above ${\\sim}40\\,\\mathrm{M}_\\odot$, extending into and potentially beyond the pair-instability mass gap, with a possibly flat mass-ratio and broader \\chi_\\mathrm{eff} distribution. We investigate whether super-Eddington accretion during stable mass transfer in isolated binary evolution can produce BBH mergers consistent with these properties across primary BH mass, mass-ratio, and \\chi_\\mathrm{eff} distributions. Using POSYDON, we simulate BBH merger populations with primary BH masses abo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.27962","kind":"arxiv","version":1},"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/2607.27962/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"}