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A 14-yr-old Mystery: The Peculiar Case of the Engine-driven SN 2012ap

  • Authors: Itai Sfaradi, Raffaella Margutti, Ryan Chornock, Nayana A. J., Eli Wiston, Fabio De Colle, Tracy E. Clarke, Wendy M. Peters, Paz Beniamini, Wenbin Lu, Rodolfo Barniol Duran, Michael Bietenholz, Collin T. Christy, Deanne L. Coppejans, Maria R. Drout, Dina Ibrahimzade, Michał J. Michałowski, Dan Milisavljevic, Conor M. B. Omand, Yihan Wang, Kate D. Alexander, Carles Badenes, Joe Bright, Jonathan Granot, Erica Hammerstein, W. V. Jacobson-Galán, Natalie LeBaron, Kohta Murase, Gitika Rameshan, Huei Sears, Michael Stroh, Giacomo Terreran

Itai Sfaradi et al 2026 The Astrophysical Journal Letters 1005 .

  • Provider: AAS Journals

Caption: Figure 6.

Kinetic energy of the ejecta of ordinary SNe Ic-BL (red) and energetic SNe, a class of explosions that includes GRBs (blue), subenergetic GRBs (light blue), and relativistic SNe (orange). This plot is the same as Figure 2 in R. Margutti et al. (2014) but with updated values for SN 2012ap (orange stars) based on the results of this work. Squares and circles are for the slow-moving and the fast-moving ejecta, respectively. As demonstrated in this plot, the energy of the jet component of SN 2012ap is similar to that of other GRBs, suggesting that the main difference between SN 2012ap and other engine-driven explosions is due to a viewing angle effect.

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