Supernovae Explosions Induced by Pair-Production Instability
Abstract
Stars with a core mass greater than about 30 M ⊙ become dynamically unstable due to electron-positron pair production when their central temperature reaches 1.5─2.0×109oK. The colapse and subsequent explosion of stars with core masses of 45, 52, and 60 M ⊙ is calculated. The range of the final velocity of expansion (3400─8500 km/sec) and of the mass ejected (1─40 M ⊙) is comparable to that observed for type II supernovae. A dynamical model of convection is derived and included in the calculations. It was found that the effect of the convection on the explosions is probably not important.
- Publication:
-
Astrophysics and Space Science
- Pub Date:
- August 1968
- DOI:
- Bibcode:
- 1968Ap&SS...2...96F
- Keywords:
-
- Convection;
- Pair Production;
- Central Temperature;
- Core Mass;
- Supernova Explosion