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- W3157482695 abstract "Abstract The discovery of early bumps in some type-I superluminous supernovae (SLSNe-I) before the main peaks offers an important clue to their energy source mechanisms. In this paper, we updated an analytic magnetar-powered model for fitting the multiband light curves of double-peaked SLSNe-I. The early bump is powered by magnetar-driven shock-breakout thermal emission, and the main peak is powered by a radiative diffusion through the supernova (SN) ejecta as in the standard magnetar-powered model. Generally, the diffusive luminosity is greater than the shock-breakout luminosity at the early time, which usually makes the shock-breakout bumps unclear to observe. To obtain a clear double-peaked light curve, inefficient magnetar heating at early times is required. This model is applied to three well-observed double-peaked SLSNe-I (i.e., SN2006oz, LSQ14bdq, and DES14Xtaz). We find that a relatively massive SN ejecta with M ej ≃ 10.2–18.1 M ⊙ and relatively large kinetic energy of SN ejecta <?CDATA ${E}_{mathrm{sn}}simeq (3.8mbox{--}6.5)times {10}^{51}$?> erg are required, and the thermalization efficiency of the magnetar heating is suppressed before t delay , which is in the range of ≃15–43 days. The model can reproduce the observed light curves well, with a reasonable and similar set of physical parameters for both the early bump and the main peak, strengthening support for the magnetar-powered model. In the future, modeling of the double-peaked SLSNe-I will become more feasible as more events are discovered before the early bump." @default.
- W3157482695 created "2021-05-10" @default.
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- W3157482695 date "2021-04-01" @default.
- W3157482695 modified "2023-10-12" @default.
- W3157482695 title "Magnetar-driven Shock Breakout Revisited and Implications for Double-peaked Type I Superluminous Supernovae" @default.
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- W3157482695 doi "https://doi.org/10.3847/1538-4357/abf042" @default.
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