FTP, what is the term for the death explosion of a massive star, resulting in a sharp increase in brightness followed by a gradual fading?
The mechanism behind the first type is not completely understood, but it is characterized by a lack of hydrogen spectra lines and it expands faster and with greater brightness than the second type. Much of the released energy is generated by the decay of nickel-56, and in the classic model it is caused by external gaseous material rebounding off a fused-out iron core. FTP, what is the term for the death explosion of a massive star, resulting in a sharp increase in brightness followed by a gradual fading?
The mechanism behind the first type is not completely understood, but it is characterized by a lack of hydrogen spectra lines and it expands faster and with greater brightness than the second type.
{Supernova}