{"paper":{"title":"Source-Frequency Phase-Referencing Observation of AGNs with KaVA Using Simultaneous Dual-Frequency Receiving","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Bong Won Sohn, Do-Young Byun, Fumie Tazaki, Guang-Yao Zhao, Hyunwook Ro, Ilje Cho, Jee Won Lee, Jeffrey A. Hodgson, Jeong Ae Lee, Jongho Park, Juan-Carlos Algaba, Katsunori Shibata, Kazuhiro Hada, Kazunori Akiyama, Kiyoaki Wajima, Kotaro Niinuma, Mareki Honma, Maria Rioja, Motoki Kino, Richard Dodson, Sascha Trippe, Satoko Sawada-Satoh, Seog-Tae Han, Taehyun Jung, Tao An, Wu Jiang, Xiaopeng Cheng, Yingkang Zhang, Yuzhu Cui, Zhi-Qiang Shen","submitted_at":"2019-03-28T06:04:00Z","abstract_excerpt":"The KVN(Korean VLBI Network)-style simultaneous multi-frequency receiving mode is demonstrated to be promising for mm-VLBI observations. Recently, other Very long baseline interferometry (VLBI) facilities all over the globe start to implement compatible optics systems. Simultaneous dual/multi-frequency VLBI observations at mm wavelengths with international baselines are thus possible. In this paper, we present the results from the first successful simultaneous 22/43 GHz dual-frequency observation with KaVA(KVN and VERA array), including images and astrometric results. Our analysis shows that t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.11796","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"}