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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 8.

Corner plots of the posterior distributions for the jet+cocoon model using VegasAfterglow code. As seen from these plots, the collimated corrected energy of the jet is reaching the highest value we impose as an upper limit for our prior, 3 × 1052 erg, the initial Lorentz factor of the jet is unconstrained and therefore serves as a lower limit. In addition, the observing angle is also reaching the highest value of the prior, θobs = 90°. In Figure 5, we present the radio SEDs with lines drawn from these posterior distributions.

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