{"paper":{"title":"A Search for Extragalactic Fast Blue Optical Transients in ZTF and the Rate of AT2018cow-like Transients","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. A. Miller, Adam J. Stewart, Aishwarya Dahiwale, Alberto J. Castro-Tirado, Anastasios Tzanidakis, Andrew J. Drake, Anna Y. Q. Ho, Ashish A. Mahabal, Avishay Gal-Yam, Christoffer Fremling, Daniel A. Perley, David L. Kaplan, Dmitry A. Duev, Dougal Dobie, Eran Ofek, Eric C. Bellm, Erik C. Kool, George Helou, Glen Petitpas, Igor Andreoni, Jakob Nordin, Jan Martin Winters, Jesper Sollerman, Kaustav K. Das, Kevin B. Burdge, Kirsty Taggart, Kishalay De, Leonardo Tartaglia, Mansi M. Kasliwal, Matthew J. Graham, Michael S. Medford, Rachel J. Bruch, Ragnhild Lunnan, Reed Riddle, Richard Dekany, Roger Smith, Scott Adams, Shreya Anand, S. R. Kulkarni, Steve Schulze, Viraj Karambelkar, Yashvi Sharma, Yuhan Yao","submitted_at":"2021-05-18T20:12:05Z","abstract_excerpt":"We present a search for extragalactic fast blue optical transients (FBOTs) during Phase I of the Zwicky Transient Facility (ZTF). We identify 38 candidates with durations above half-maximum light 1 d < t1/2 < 12 d, of which 28 have blue (g-r<-0.2 mag) colors at peak light. Of the 38 transients (28 FBOTs), 19 (13) can be spectroscopically classified as core-collapse supernovae (SNe): 11 (8) H- or He-rich (Type II/IIb/Ib) SNe, 6 (4) interacting (Type IIn/Ibn) SNe, and 2 (1) H&He-poor (Type Ic/Ic-BL) SNe. Two FBOTs (published previously) had high-S/N predominantly featureless spectra and luminous"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.08811","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/2105.08811/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"}