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\section{Steady vs Eruptive Massloss}  The mass loss rates during the last few hundred years of evolution of some core collapse supernova progenitors seem to violate the maximum values allowed by line-driven winds ($\odot{M}\sim 10^-4$M_$\odot$yr$^-1$, Smith \& Owocki 2006).   Intense stellar mass loss during the final years before core collapse could be caused by   internal gravity waves excited by core convection during Oxygen and Neon fusion (Quataert \& Shiode 2012, 2014).     %This energy can generate circumstellar environments with 10−3–1 solar masses reaching 100 AU before %explosion. We predict a correlation between the energy associated with pre-SN mass ejection and the %time to core collapse, with the most intense mass loss preferentially occurring closer to core collapse.  \begin{itemize}  \item \textbf{Line Driven Winds}  \item \textbf{Binary Interactions}