{"paper":{"title":"Asymmetric structure in Sgr A* at 3mm from closure phase measurements with VLBA, GBT and LMT","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"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 Falcke, J. Anton Zensus, Jonathan Le\\'on-Tavares, Laurent Loinard, Michael Kramer, Monika Mo\\'scibrodzka, Raquel Fraga-Encinas, Remo P. J. Tilanus, Sheperd S. Doeleman, Thomas P. Krichbaum","submitted_at":"2016-08-23T14:00:53Z","abstract_excerpt":"We present the results of a closure phase analysis of 3 mm very long baseline interferometry (VLBI) measurements performed on Sagittarius A* (Sgr A*). We have analyzed observations made in May 2015 using the Very Long Baseline Array, the Robert C. Byrd Green Bank Telescope and the Large Millimeter Telescope Alfonso Serrano and obtained non-zero closure phase measurements on several station triangles - indicative of a non-point-symmetric source structure. The data are fitted with an asymmetric source structure model in Sgr A*, represented by a simple two-component model, which favours a fainter"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.06515","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"}