{"paper":{"title":"A Deep VLA Search for a Persistent Radio Counterpart to the One-off FRB 20250316A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Ailing Wang, Jia-Pei Feng, Tao An, Yuanqi Liu, Yu-Chen Huang, Zhongli Zhang, Zi-Gao Dai","submitted_at":"2025-08-07T16:32:59Z","abstract_excerpt":"Fast Radio Burst (FRB) 20250316A, detected by CHIME on 2025 March 16 with a fluence of $1.7\\pm0.1~\\mathrm{Jy\\,ms}$ and a dispersion measure of $161.3\\pm0.4~\\mathrm{pc\\,cm^{-3}}$, ranks among the brightest extragalactic FRBs at $\\sim 40$ Mpc. We obtained deep Karl G. Jansky Very Large Array follow-up at 15~GHz on 2025 April 5 and 9 and find no persistent radio source (PRS). Our best image reaches an rms of $2.8~\\mu\\mathrm{Jy\\,beam^{-1}}$, yielding a $3\\sigma$ upper limit of $<8.4~\\mu\\mathrm{Jy}$ at the FRB position, corresponding to $\\nu L_\\nu < 2.4\\times10^{35}~\\mathrm{erg\\,s^{-1}}$. These res"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.05552","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2508.05552/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}