and type II supernovae are caused by core collapse. Because the supernova "family tree" was laid out according to the light from supernovae, not their cause, there's technically also a type Ib and Ic.

"Thanks to the high resolution of our new images, we detected a faint structure on the northeast side of this supernova ...

Their work provides crucial insights into the explosion mechanisms of this rare type of supernova and ... significantly influences the supernova's light curve and spectral evolution.