Hydrodynamic modeling of SLSNe: Application to the unprecedentedly bright ASASSN-15lh

M. ORELLANA; BERSTEN, M.C; BENVENUTO, O.G.; NOMOTO, K.

Isla de Pascua

Conferencia; Supernovae Through the Ages; 2016

Millenium Institute of Astrophysics

We use our radiation hydrodynamic code in order to simulate magnetar powered Superluminous Supernovae (SLSNe). As previously proposed, we assume that the central rapidly rotating magnetar deposits all its rotational energy into the ejecta. The magnetar luminosity and spin-down timescale are adopted as the free parameters of the model. For the case of ASASSN-15lh (SN 2015L), which has been claimed as the most luminous SN ever discovered, we have found physically plausible magnetar parameters can reproduce the overall shape of the bolometric light curve (LC) provided the progenitor mass is relatively large (i.e. an ejected mass of approx 6 Msun. We note the ejecta hydrodynamics of this event is dominated by the magnetar input. This and other numerical experiments lead us to conclude that the hydrodynamic modeling is necessary in order to derive the properties of magnetars driven SLSNe and to characterize their stellar progenitors