When neutrinos blow apart a star.

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SUMMARY

The discussion centers on the phenomenon of neutrinos during stellar core collapse, specifically in supernova events. When a stellar core collapses, thermal neutrinos are produced, which interact with the core before escaping. While the core is dense and opaque to neutrinos, the surrounding mass is nearly transparent, allowing neutrinos to carry away significant energy. This energy loss is sufficient to expel the surrounding mass, resulting in a supernova explosion that is visually spectacular yet largely obscured in terms of energy transfer, as most energy is carried away by neutrinos rather than emitted as light.

PREREQUISITES
  • Understanding of stellar core collapse mechanisms
  • Knowledge of neutrino physics and interactions
  • Familiarity with supernova phenomena
  • Basic principles of thermal equilibrium in astrophysical contexts
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  • Research the role of neutrinos in supernova explosions
  • Study the processes of thermal neutrino production during core collapse
  • Examine the implications of neutrino interactions with matter
  • Explore the observational techniques for detecting neutrinos from supernovae
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Astronomers, astrophysicists, and students interested in stellar evolution, supernova mechanics, and neutrino physics will benefit from this discussion.

Spinnor
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Reading from The Astrophysics Spectator:

http://www.astrophysicsspectator.com/topics/supernovae/SupernovaeCoreCollapse.html

"When a stellar core collapses, its high density spurs the creation of thermal neutrinos through a variety of processes. The core itself is not transparent to neutrinos, so they interact and come into thermal equilibrium with the core before escaping. The mass surrounding the core is almost transparent to these neutrinos, so very few neutrinos give up energy to the surrounding mass. The tiny amount of energy lost by the neutrinos to the surrounding mass, however, is more than sufficient to blow this mass away from the core. The most energetic explosions in the universe therefore hide most of their energy from our sight; we see the brilliant light and the high speed of the supernova debris, but we almost never see the neutrinos that carry away almost all of the energy generated in the birth of the neutron star. ...

In the above,

"The tiny amount of energy lost by the neutrinos to the surrounding mass, however, is more than sufficient to blow this mass away from the core. ...

So there is a radial burst of neutrinos from the dying star that blows the "top" off the star. Do the neutrinos "push" as hard on the positively charged matter as the negatively charged matter? If the "force" is different does this then temporally polarize such matter?

Thanks for any help!
 
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