{"paper":{"title":"The Peculiar Transient AT2018cow: A Possible Origin of A Type Ibn/IIn Supernova","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Escart\\'in-P\\'erez, A. Mantero, Andr\\'as Ordasi, Andr\\'as P\\'al, Attila B\\'odi, B\\'alint Seli, Bernadett Ign\\'acz, Borb\\'ala Cseh, Csilla Kalup, Curtis McCully, Daichi Hiramatsu, D. Andrew Howell, Danfeng Xiang, Davron Mirzaqulov, D. Cejudo-Mart\\'inez, F.C. Sold\\'an-Alfaro, F. Garc\\'ia-De la Cuesta, F. Lim\\'on-Mart\\'inez, F. Violat-Bordonau, Griffin Hosseinzadeh, Han Lin, Hanna Sai, Jamison Burke, J. Craig Wheeler, J.L. Gonz\\'alez-Carballo, J\\'ozsef Vink\\'o, Jujia Zhang, Jun Mo, J. Valero-P\\'erez, Kriszti\\'an S\\'arneczky, Levente Kriskovics, M. Morales-Aimar, Ott\\'o Hanyecz, P. De la Fuente-Fern\\'andez, R. Benavides-Palencia, R\\'eka K\\\"onyves-T\\'oth, R. Gonz\\'alez-Farf\\'an, R. Naves-Nogu\\'es, R\\'obert Szak\\'ats, Shuhrat A. Ehgamberdiev, Stefan Valenti, T. Arranz-Heras, Tianmeng Zhang, V. R. Ru\\'iz-Ru\\'iz, Weili Lin, Wenxiong Li, Xiaofeng Wang, Xue Li, Zhihao Chen, Zs\\'ofia Bogn\\'ar","submitted_at":"2021-01-20T07:43:52Z","abstract_excerpt":"We present our photometric and spectroscopic observations on the peculiar transient AT2018cow. The multi-band photometry covers from peak to $\\sim$70 days and the spectroscopy ranges from 5 to $\\sim$50 days. The rapid rise ($t_{\\mathrm{r}}$$\\lesssim$2.9 days), high luminosity ($M_{V,\\mathrm{peak}}\\sim-$20.8 mag) and fast decline after peak make AT2018cow stand out of any other optical transients. While we find that its light curves show high resemblance to those of type Ibn supernovae. Moreover, the spectral energy distribution remains high temperature of $\\sim$14,000 K after $\\sim$15 days sin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.08009","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/2101.08009/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"}