Cosmology, astrophysics and elementary particle physics

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astrophysics, Cosmology, Elementary Particles, Stellar Evolution, Universe, Black Holes (Astronomy), Leptons, Neutrinos, Quarks, Supernovae

Scientific paper

The physics of the early universe are studied and the role of new particles such as heavy leptons, neutrinos and quarks and possible relationship of the net baryon number of the universe to unified models of elementary particle physics are discussed. Consideration is given to the role of neutrinos in stellar evolution, particularly in the explosion of supernovae and in the cooling of neutron stars. Black holes are discussed in connection with Hawking's discovery that low-mass black holes can emit a thermal distribution of particles which could be of cosmological or astrophysical importance. Finally, the evidence that the laws of physics are unchanging is examined, and it is concluded that there is no clear case in favor of change.

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