On the diversity of superluminous supernovae: Ejected mass as the dominant factor
Nicholl, M.; Smartt, Stephen J.; Jerkstrand, Anders; Inserra, Cosimo; Sim, Stuart; Chen, Ting-Wan; Benetti, Stefano; Fraser, M; Gal-Yam, Avishay; Kankare, E; Botticella, M T; Le Guillou, L; Childress, Michael; Scalzo, Richard; Schmidt, Brian; Yuan, Fang
We assemble a sample of 24 hydrogen-poor superluminous supernovae (SLSNe). Parameterizing the light-curve shape through rise and decline time-scales shows that the two are highly correlated. Magnetar-powered models can reproduce the correlation, with the diversity in rise and decline rates driven by the diffusion time-scale. Circumstellar interaction models can exhibit a similar rise-decline relation, but only for a narrow range of densities, which may be problematic for these models. We find...[Show more]
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