{"paper":{"title":"Evidence for Late-stage Eruptive Mass-loss in the Progenitor to SN2018gep, a Broad-lined Ic Supernova: Pre-explosion Emission and a Rapidly Rising Luminous Transient","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Adam Goldstein, Alessandra Corsi, Alison Dugas, Anna Y. Q. Ho (Caltech), Assaf Horesh, Avishay Gal-Yam, Ben Rusholme, Chow-Choong Ngeow, Christoffer Fremling, Claes Fransson, Cristina Barbarino, Daniel A. Goldstein, Daniel A. Perley, David Hale, David K. Khatami, David L. Shupe, Eran O. Ofek, Eric Burns, Eric C. Bellm, Francesco Taddia, Frank J. Masci, Glen Petitpas, Hanna Sai, Igor Andreoni, Itai Sfaradi, Jesper Sollerman, Joe S. Bright, Kishalay De, Maayane T. Soumagnac, Mansi M. Kasliwal, Maria T. Patterson, Matthew J. Graham, Mattias Ergon, Nadia Blagorodnova, N. Paul M. Kuin, Peter E. Nugent, Ragnhild Lunnan, Richard Dekany, Richard Walters, Rob P. Fender, S. Bradley Cenko, Shri R. Kulkarni, Steve Schulze, Thomas Kupfer, Tiara Hung, Virginia Cunningham, Xiaofeng Wang, Xinhan Zhang, Yuhan Yao, Yutaro Tachibana","submitted_at":"2019-04-24T18:51:50Z","abstract_excerpt":"We present detailed observations of ZTF18abukavn (SN2018gep), discovered in high-cadence data from the Zwicky Transient Facility as a rapidly rising ($1.4\\pm0.1$ mag/hr) and luminous ($M_{g,\\mathrm{peak}}=-20$ mag) transient. It is spectroscopically classified as a broad-lined stripped-envelope supernova (Ic-BL SN). The high peak luminosity ($L_{\\mathrm{bol}} \\gtrsim 3 \\times 10^{44}$ erg $\\mathrm{sec}^{-1}$), the short rise time ($t_{\\mathrm{rise}}= 3$ days in $g$-band), and the blue colors at peak ($g-r\\sim-0.4$) all resemble the high-redshift Ic-BL iPTF16asu, as well as several other unclas"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.11009","kind":"arxiv","version":4},"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/1904.11009/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"}