A Model of Homologous Confined and Ejective Eruptions Involving Kink Instability and Flux Cancellation

In this study, we model a sequence of confined and full eruption, employing the relaxed end state eruption kink-unstable flux rope as initial condition for ejective one. The coronal mass ejection, develops result converging motions imposed at photospheric boundary, which drive cancellation. process, parts positive negative external converge toward polarity inversion line, reconnect, cancel each other. Flux same amount canceled transfers to rope, increasing free magnetic energy field. With sustained cancellation associated progressive weakening tension overlying flux, find that reduction $\approx\!11\%$ initiates torus instability leads eruption. These results demonstrate homologous following one, can be driven by