Research in nuclear astrophysics: Stellar collapse and supernovae

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Neutron Stars, Nuclear Astrophysics, Stellar Evolution, Supernovae, Astrophysics, Equations Of State, Neutrinos

Scientific paper

This proposal describes the nuclear astrophysics research program in the Earth and Space Sciences Department at Stony Brook. The central themes in the many projects that comprise this program are supernovae, neutron star formation, and the equation of state of hot, dense matter. There is a close coupling between the physics of nuclear matter on the one hand, and supernova and neutron stars on the other. (The collapse of massive stars is thought to lead to Type II supernovae and the creation of neutron stars. A summary of the historical background and of recent developments in the theory of Type II supernovae, complete with references, is contained in the Appendix.) The properties of nuclear matter, together with those of the weak interactions, determine the outcome of models of Type II supernovae; thus, optical observations of supernovae and neutrons stars may set some limits on the nuclear equation of state. In the future, the detection of neutrinos, which are the only available observables of the internal supernova mechanism, will impose tighter constraints on nuclear matter properties.

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