{"paper":{"title":"Micro-arcsecond structure of Sagittarius A* revealed by high-sensitivity 86 GHz VLBI observations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Adam T. Deller, Alfredo Monta\\~na, Antonio Hern\\'andez-G\\'omez, Christiaan D. Brinkerink, Ciriaco Goddi, Cornelia M\\\"uller, David H. Hughes, David Sanchez-Arguelles, Edgar Castillo, Geoffrey C. Bower, Gisela N. Ortiz-Le\\'on, Grant W. Wilson, Heino D. Falcke, J. Anton Zensus, Jonathan L\\'eon-Tavares, Kazunori Akiyama, Laurent Loinard, Michael Kramer, Monika Mo\\'scibrodzka, Raquel Fraga-Encinas, Remo P. J. Tilanus, Sara Issaoun, Sheperd S. Doeleman, Thomas P. Krichbaum","submitted_at":"2018-11-20T18:05:42Z","abstract_excerpt":"The compact radio source Sagittarius~A$^*$ (Sgr~A$^*$)in the Galactic Center is the primary supermassive black hole candidate. General relativistic magnetohydrodynamical (GRMHD) simulations of the accretion flow around Sgr\\,A$^*$ predict the presence of sub-structure at observing wavelengths of $\\sim 3$\\,mm and below (frequencies of 86\\,GHz and above). For very long baseline interferometry (VLBI) observations of Sgr\\,A$^*$ at this frequency the blurring effect of interstellar scattering becomes subdominant, and arrays such as the High Sensitivity Array (HSA) and the global mm-VLBI Array (GMVA)"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.08394","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"}