Evolution of massive stars (AQA A-Level Physics): Flashcards
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Mass threshold for massive star evolution
Mass threshold for massive star evolution
1.4 solar masses
Primary fusion cycle in massive stars
Primary fusion cycle in massive stars
CNO cycle
Red supergiant luminosity vs Sun
Red supergiant luminosity vs Sun
~100,000 times
Type II supernova involves what kind of star?
Type II supernova involves what kind of star?
Single massive star
Duration of Type II supernova core collapse
Duration of Type II supernova core collapse
Seconds
Typical diameter of neutron star
Typical diameter of neutron star
~20 km
Maximum rotation rate of pulsars (per second)
Maximum rotation rate of pulsars (per second)
Up to 600 times per second
Escape velocity from black hole
Escape velocity from black hole
≥ speed of light ()
Formula for Schwarzschild radius
Formula for Schwarzschild radius
Energy released by typical gamma ray burst (J)
Energy released by typical gamma ray burst (J)
J