{"paper":{"title":"Japanese VLBI Network observations of radio-loud narrow-line Seyfert 1 galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Akihiro Doi, Asao Habe, Eiji Kawai, Hideyuki Kobayashi, Hiromitsu Kuboki, Hiroshi Nagai, Hiroshi Sudou, Hiroshi Takaba, Kazuhiro Takashima, Kazuo Sorai, Keiichiro Harada, Ken-ichi Wakamatsu, Kenta Fujisawa, Kiyoaki Wajima, Koji Takeda, Kousuke Suematsu, Makoto Inoue, Mareki Honma, Noriyuki Kawaguchi, Sayaka Tamura, Toshihiro Omodaka, Yasuhiro Koyama, Yasuhiro Murata","submitted_at":"2007-04-29T10:07:29Z","abstract_excerpt":"We performed phase-reference very long baseline interferometry (VLBI) observations on five radio-loud narrow-line Seyfert 1 galaxies (NLS1s) at 8.4 GHz with the Japanese VLBI Network (JVN). Each of the five targets (RXS J08066+7248, RXS J16290+4007, RXS J16333+4718, RXS J16446+2619, and B3 1702+457) in milli-Jansky levels were detected and unresolved in milli-arcsecond resolutions, i.e., with brightness temperatures higher than 10^7 K. The nonthermal processes of active galactic nuclei (AGN) activity, rather than starbursts, are predominantly responsible for the radio emissions from these NLS1"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0704.3836","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"}