학술논문
Supernova 2020wnt: An Atypical Superluminous Supernova with a Hidden Central Engine
Document Type
article
Author
Samaporn Tinyanont; Stan E. Woosley; Kirsty Taggart; Ryan J. Foley; Lin Yan; Ragnhild Lunnan; Kyle W. Davis; Charles D. Kilpatrick; Matthew R. Siebert; Steve Schulze; Chris Ashall; Ting-Wan Chen; Kishalay De; Georgios Dimitriadis; Dillon Z. Dong; Christoffer Fremling; Alexander Gagliano; Saurabh W. Jha; David O. Jones; Mansi M. Kasliwal; Hao-Yu Miao; Yen-Chen Pan; Daniel A. Perley; Vikram Ravi; César Rojas-Bravo; Itai Sfaradi; Jesper Sollerman; Vanessa Alarcon; Rodrigo Angulo; Karoli E. Clever; Payton Crawford; Cirilla Couch; Srujan Dandu; Atirath Dhara; Jessica Johnson; Zhisen Lai; Carli Smith
Source
The Astrophysical Journal, Vol 951, Iss 1, p 34 (2023)
Subject
Language
English
ISSN
1538-4357
Abstract
We present observations of a peculiar hydrogen- and helium-poor stripped-envelope (SE) supernova (SN) 2020wnt, primarily in the optical and near-infrared (near-IR). Its peak absolute bolometric magnitude of −20.9 mag ( L _bol, peak = (6.8 ± 0.3) × 10 ^43 erg s ^−1 ) and a rise time of 69 days are reminiscent of hydrogen-poor superluminous SNe (SLSNe I), luminous transients potentially powered by spinning-down magnetars. Before the main peak, there is a brief peak lasting