{"paper":{"title":"What sparks the radio-loud phase of nearby quasars?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Froylan Moreno del Rio, Heinz Andernach, Juan Pablo Torres-Papaqui Ren\\'e Alberto Ortega-Minakata, Roger Coziol","submitted_at":"2016-12-08T14:18:34Z","abstract_excerpt":"To better constrain the hypotheses proposed to explain why only a few quasars are radio loud (RL), we compare the characteristics of 1958 nearby $(z\\le 0.3)$ SDSS quasars, covered by the FIRST and NVSS radio surveys. Only 22\\% are RL with $\\log(L_{1.4{\\rm GHz}}) \\ge 22.5$ W Hz$^{-1}$, the majority being compact (C), weak radio sources (WRS), with $\\log(L_{1.4{\\rm GHz}}) < 24.5$ W Hz$^{-1}$. 15\\% of the RL quasars have extended radio morphologies: 3\\% have a core and a jet (J), 2\\% have a core with one lobe (L), and 10\\% have a core with two lobes (T), the majority being powerful radio sources "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.02655","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"}