{"paper":{"title":"Is there really a super-massive black hole in M87?","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Capetti (SISSA), A. Marconi (STScI), D.J. Axon (STScI), F.D. Macchetto (STScI), P. Crane (ESO), W.B. Sparks (STScI)","submitted_at":"1997-06-24T14:14:50Z","abstract_excerpt":"We present the first HST long-slit spectrum of a gaseous disk around a candidate super-massive black-hole. The results of this study on the kinematics of the gaseous disk in M87 are a considerable improvement in both spatial resolution and accuracy over previous observations and requires a projected mass of M_{BH}(sin i)^2 = (2.0+/- 0.5) 10^9 M_{sun} (M_{BH}=3.2 10^9 M_{sun} for a disk inclination i=52deg) concentrated within a sphere whose radius is less than 0.05\" (3.5 pc) to explain the observed rotation curve. The kinematics of the ionized gas is well described by a thin disk in keplerian "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9706246","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"}