{"paper":{"title":"The LOFAR Two-Metre Sky Survey (LoTSS): VI. Optical identifications for the second data release","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Botteon, A. Drabent, A. Goyal, A. Shulewski, B. Barkus, C. L. Hale, C. S. Molloy, D. J. B. Smith, D. J. Schwarz, E. Osinga, F. De Gasperin, G. G\\\"urkan, H. Dickinson, H. J. A. R\\\"ottgering, H. Tang, I. A. Terentev, I. Prandoni, J. C. S. Pierce, J. H. Croston, J. Petley, J. P. Stott, J. Sabater, K. J. Duncan, L. Alegre, L. Mielle, M. A. Horton, M. Br\\\"uggen, M. Hajduk, M. Hanset, M. Hoeft, M. Jamrozy, M. J. Hardcastle, M. Kunert-Bajraszewska, M. Magliocchetti, M. Torres, M. Vaccari, P. N. Best, R. I. J. Mostert, R. Kondapally, R. Roth, S. Desbled, S. M. Lim, S. P. O'Sullivan, T. Bailey, T. M. Siewert, T. W. Shimwell, U. Pajdosz-\\'Smierciak, V. Gonano, V. H. Mahatma, W. Kurtz, W. L. Williams, X. Zheng","submitted_at":"2023-08-31T19:42:01Z","abstract_excerpt":"The second data release of the LOFAR Two-Metre Sky Survey (LoTSS) covers 27% of the northern sky, with a total area of $\\sim 5,700$ deg$^2$. The high angular resolution of LOFAR with Dutch baselines (6 arcsec) allows us to carry out optical identifications of a large fraction of the detected radio sources without further radio followup; however, the process is made more challenging by the many extended radio sources found in LOFAR images as a result of its excellent sensitivity to extended structure. In this paper we present source associations and identifications for sources in the second dat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.00102","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/2309.00102/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"}