They produce material that enters a so-called snow-plow phase after passing through a period of free expansion and the Sedov phase.
They produce material that enters a so-called snow-plow phase after passing through a period of free expansion and the Sedov phase. The Cygnus Loop and Cassiopeia A are examples of their remnants, which heat the interstellar medium and may produce first-order Fermi acceleration via shocks. The core- collapse model describes one type, while another type is thought to result when mass transfer in a binary pushes a white dwarf past the Chandrasekhar limit, triggering runaway carbon burning. Neutron stars form after, For 10 points, these violent stellar explosions.
They produce material that enters a so-called snow-plow phase after passing through a period of free expansion and the Sedov phase.
{supernovae}