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Type Ia supernovae from exploding oxygen-neon white dwarfs
Kai S. Marquardt, Stuart A. Sim, Ashley J. Ruiter +5
The progenitor problem of Type Ia supernovae (SNe Ia) is still unsolved. Most of these events are thought to be explosions of carbon-oxygen (CO) white dwarfs (WDs), but for many of…
The large-scale properties of simulated cosmological magnetic fields
Federico Marinacci, Mark Vogelsberger, Philip Mocz +1
We perform uniformly sampled large-scale cosmological simulations including magnetic fields with the moving mesh code AREPO. We run two sets of MHD simulations: one including adiab…
Deflagrations in hybrid CONe white dwarfs: a route to explain the faint Type Iax supernova 2008ha
M. Kromer, S. T. Ohlmann, R. Pakmor +7
Stellar evolution models predict the existence of hybrid white dwarfs (WDs) with a carbon-oxygen core surrounded by an oxygen-neon mantle. Being born with masses ~1.1 Msun, hybrid…
500 Days of SN 2013dy: spectra and photometry from the ultraviolet to the infrared
Y. -C. Pan, R. J. Foley, M. Kromer +23
SN 2013dy is a Type Ia supernova for which we have compiled an extraordinary dataset spanning from 0.1 to ~ 500 days after explosion. We present 10 epochs of ultraviolet (UV) throu…
Improving the convergence properties of the moving-mesh code AREPO
Ruediger Pakmor, Volker Springel, Andreas Bauer +5
Accurate numerical solutions of the equations of hydrodynamics play an ever more important role in many fields of astrophysics. In this work, we reinvestigate the accuracy of the m…