Supernova 2020wnt: An Atypical Superluminous Supernova with a Hidden Central Engine

Tinyanont, Samaporn; Woosley, S. E.; Taggart, K.; Foley, R. J.; Yang, Lin; Lunnan, R.; Davis, Kyle W.; Kilpatrick, C. D.; Siebert, M. R.; Schulze, S.; Ashall, C.; Chen, Ting-Wan; De, Kishalay; Dimitriadis, G.; Dong, Dillon; Fremling, C.; Gagliano, Alexander; Jones, D. O.; Kasliwal, Mansi M.; Miao, Hao-Yu; Pan, Y. C.; Perley, D.; Ravi, Vikram; Rojas-Bravo, C.; Sfaradi, Itai; Sollerman, J.; Alarcon, Vanessa; Angulo, Rodrigo; Clever, Karoli E.; Payton, Crawford,; Couch, Cirilla; Dandu, Srujan; Dhara, Atirath; Johnson, Jessica; Lai, Zhisen; Smith, C.

doi:10.48550/arxiv.2212.00177

Cited by 1 publication

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“…Similar undulations were detected in 34%-62% of the SLSNe-I discovered in the Zwicky Transient Facility (ZTF) Phase-I Survey (Chen et al 2023). However, these works mostly focused on observational statistics, whereas existing theoretical studies of LC fluctuations mostly focused on individual objects (e.g., Fiore et al 2021;Chugai & Utrobin 2022;Tinyanont et al 2022;West et al 2023). Here, we perform systematic fits to SLSN-I LCs with bumpy features under the magnetar-powered model.…”

Section: Sample Selectionmentioning

confidence: 99%

“…Currently, time-domain surveys are gathering substantial amounts of well-observed SLSNe-I. The magnetar-powered model or CSM interaction alone cannot explain the undulations and occasional significant postpeak bumps observed in some SLSN-I LCs (e.g., Nicholl et al 2016b;Inserra et al 2017;Yan et al 2020;Fiore et al 2021;Gomez et al 2021;Gutiérrez et al 2022;Tinyanont et al 2022;West et al 2023;Zhu et al 2023). Recently, systematic studies of the prevalence and properties of postpeak bumps of SLSNe have found that these fluctuation structures may be relatively common (Hosseinzadeh et al 2022;Chen et al 2023).…”

Section: Introductionmentioning

confidence: 99%

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Magnetar Flare-driven Bumpy Declining Light Curves in Hydrogen-poor Superluminous Supernovae

Liu

Yang

2023

ApJ

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Recent observations indicate that hydrogen-poor superluminous supernovae (SLSNe-I) often display bumpy declining light curves. However, the cause of these undulations remains unclear. In this paper, we have improved the magnetar model, which includes flare activities. We present a systematic analysis of a well-observed SLSN-I sample with bumpy light curves in their late phase. These SLSNe-I were identified from multiple transient surveys, such as the Pan-STARRS1 Medium Deep Survey and the Zwicky Transient Facility. Our study provides a set of magnetar-powered model light curve fits for five SLSNe-I, which accurately reproduce the observed light curves using reasonable physical parameters. By extracting the essential characteristics of both the explosions and central engines, these fits provide valuable insights into investigating their potential association with gamma-ray burst engines. We found that the SLSN flares tend to be the dim and long extension of GRB flares in the peak luminosity versus peak time plane. Conducting large-scale, high-cadence surveys in the near future could enhance our comprehension of both SLSN undulating light curve properties and their potential relationship with GRBs by modeling their light curve characteristics.

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