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Two Models of the Sun
Origin  
 
The sun formed instantly as a homogeneous body from an interstellar cloud with no mass accretion or mass loss.
 
The sun formed in a timely manner by accretion of fresh supernova debris on the collapsed core of a supernova.
 
Main source of luminosity  
 
Hydrogen-fusion in the core
 
Energy from a supernova core
 
Main nuclear reactions  
 
Hydrogen fusion:
  4 1H + 2 e- > 4He + 2 v + 27 MeV
 
Neutron emission:
  <1n> > 1n + 10 MeV
Neutron decay:
  1n > 1H + 0.8 MeV
Hydrogen fusion:
  4 1H + 2 e- > 4He + 2 v + 27 MeV
 
Energy from hydrogen fusion  
 
100 %
 
38 %
 
Solar neutrino flux, excluding CNO neutrinos* (observed/predicted) 
 
50 %
 
130 %
 
Observable by-products of nuclear reactions  
 
1. Neutrinos from the decay of fusion products in the core.
 
1. Neutrinos from the decay of fusion products in the core.

2. Hydrogen ions escape from the surface in the solar wind.
 
Major elements in the sun  
 
Hydrogen, helium, carbon
 
Iron, nickel, oxygen, silicon
 
Comparable meteorites  
 
None. Only about 0.1 % of the sun has the composition of carbonaceous chondrites.
 
About 99% of the sun has the same composition as ordinary meteorites.
 
Comparable planets  
 
Giant planets far from the sun
 
Rocky planets close to the sun
 
* CNO neutrinos may be indicated by growth of the solar-wind 15N/14N ratio over geologic time.




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© 2002 Dr. Oliver K. Manuel - All Rights Reserved