Astrophysics and Space Science

, Volume 2, Issue 1, pp 96–114

Supernovae explosions induced by pair-production instability

  • Gary S. Fraley


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.


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Copyright information

© D. Reidel Publishing Company 1968

Authors and Affiliations

  • Gary S. Fraley
    • 1
  1. 1.California Institute of TechnologyPasadenaUSA
  2. 2.Los Alamos Scientific LaboratoryLos AlamosUSA

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