Double “acct”: A Distinct Double-peaked Supernova Matching Pulsational Pair Instability Models

Double “acct”: A Distinct Double-peaked Supernova Matching Pulsational Pair Instability Models

We present multiwavelength data of SN 2020acct, a double-peaked stripped-envelope supernova (SN) in NGC 2981 at ∼150 Mpc. The two peaks are temporally distinct, with maxima separated by 58 rest-frame days and a factor of 20 reduction in flux between. The first is luminous ( M _r  = −18.00 ± 0.02 mag...

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Main Authors: C. R. Angus, S. E. Woosley, R. J. Foley, M. Nicholl, V. A. Villar, K. Taggart, M. Pursiainen, P. Ramsden, S. Srivastav, H. F. Stevance, T. Moore, K. Auchettl, W. B. Hoogendam, N. Khetan, S. K. Yadavalli, G. Dimitriadis, A. Gagliano, M. R. Siebert, A. Aamer, T. de Boer, K. C. Chambers, A. Clocchiatti, D. A. Coulter, M. R. Drout, D. Farias, M. D. Fulton, C. Gall, H. Gao, L. Izzo, D. O. Jones, C.-C. Lin, E. A. Magnier, G. Narayan, E. Ramirez-Ruiz, C. L. Ransome, A. Rest, S. J. Smartt, K. W. Smith
Format: Article
Language:English
Published: IOP Publishing 2024-01-01
Series:The Astrophysical Journal Letters
Subjects:
Supernovae
Core-collapse supernovae
Type Ib supernovae
Massive stars
Online Access:https://doi.org/10.3847/2041-8213/ad9264
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https://doi.org/10.3847/2041-8213/ad9264

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