Proto-magnetar jets as central engines for broad-lined Type Ic supernovae

ABSTRACT A subset of Type Ic supernovae (SNe Ic), broad-lined SNe Ic-bl), show unusually high kinetic energies (∼1052 erg) that cannot be explained by the energy supplied neutrinos alone. Many Ic-bl have been observed in coincidence with long gamma-ray bursts (GRBs) suggests a connection between and GRBs. small fraction core-collapse form rapidly rotating strongly magnetized protoneutron star (PNS), proto-magnetar. Jets from such magnetars can provide also to In this work, we use jetted outflow produced 3D general relativistic magnetohydrodynamic CCSN simulation consistently formed proto-magnetar as central engine for full-star explosion simulations. We extract range parameters find extracted is 6.231 × 1051−1.725 1052 erg, time-scale 0.479−1.159 s half-opening angle ∼9°−19°. Using these engines, perform 2D special (SR) hydrodynamic (HD) radiation transfer simulations calculate corresponding light curves spectra. successfully produce demonstrates jets proto-magnetars viable engines Ic-bl. only smaller opening angles (∼11°) GRB implying formation likely associated narrower jet outflows Ic-bl’s without GRBs may wider outflows.