{"paper":{"title":"Mass ratio in SS433 revisited","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A.A. Belinski (Sternberg Astronomical Institute, A.M. Cherepashchuk, K.A. Postnov, Moscow)","submitted_at":"2019-02-28T15:07:05Z","abstract_excerpt":"We revisit the determination of binary mass ratio in the Galactic microquasar SS433 based on recent GRAVITY VLTI measurements of mass and angular momentum outflow through a circumbinary disc. The new observations combined with the constancy of the binary orbital period over $\\sim 30$ yrs confirm that the mass ratio in SS433 is $q=M_\\mathrm{x}/M_\\mathrm{v}\\gtrsim 0.6$. For the assumed optical star mass $M_\\mathrm{v}$ ranging from $\\sim 8$ to 15 $M_\\odot$ such a mass ratio suggests a low limit of the compact object mass of $M_\\mathrm{x}\\sim 5-9 M_\\odot$, placing the compact object in SS433 as a "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.11137","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":""},"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"}