{"paper":{"title":"V-LoTSS: The Circularly-Polarised LOFAR Two-metre Sky Survey","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE","astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"A. Bonafede, A. Botteon, A. Drabent, A. J. Gloudemans, A. Rowlinson, A. Shulevski, B. J. S. Pope, B. Mingo, C. G. Bassa, C. J. Riseley, C. Tasse, D. G. Nair, D. J. Bomans, D. J. Schwarz, D. N. Hoang, F. Sweijen, G. G\\\"urkan, G. J. White, H. J. A. R\\\"ottgering, H. K. Vedantham, J. R. Callingham, J. Zheng, K. L. Emig, K. T. Chy\\.zy, L. K. Morabito, L. Lamy, M. Bonato, M. Bruggen, M. Hajduk, M. Haverkorn, M. Hoeft, M. Iacobelli, M. J. Hardcastle, M. Kadler, M. Kunert-Bajraszewska, M. P\\'erez-Torres, M. Vaccari, P. N. Best, P. Zarka, R. D. Kavanagh, R. J. van Weeren, R. Timmerman, S. Bloot, S. P. O'Sullivan, T. P. Ray, T. W. H. Yiu, T. W. Shimwell","submitted_at":"2022-12-19T19:37:42Z","abstract_excerpt":"We present the detection of 68 sources from the most sensitive radio survey in circular polarisation conducted to date. We use the second data release of the 144 MHz LOFAR Two-metre Sky Survey to produce circularly-polarised maps with median 140 $\\mu$Jy beam$^{-1}$ noise and resolution of 20$''$ for $\\approx$27% of the northern sky (5634 deg$^{2}$). The leakage of total intensity into circular polarisation is measured to be $\\approx$0.06%, and our survey is complete at flux densities $\\geq1$ mJy. A detection is considered reliable when the circularly-polarised fraction exceeds 1%. We find the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.09815","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2212.09815/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"}