Physics
Scientific paper
Jan 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996suny.rept.....l&link_type=abstract
Technical Report, State Univ. of New York Stony Brook, NY United States
Physics
Neutrinos, Neutron Stars, Opacity, Stellar Evolution, Protostars, Stellar Models, Equations Of State, Extraterrestrial Matter, Stellar Mass, Strangeness, Hyperons, Nuclear Scattering, Thermodynamic Properties
Scientific paper
This program proposes to elucidate how multi-wavelength observations of neutron stars constrain the microphysics of strong interactions at high densities. New observations with X-ray and gamma-ray satellites and a new generation of neutrino observatories will provide a wealth of data about the properties of neutron stars. Our intent is to develop and implement new theoretical ideas concerning the composition and equation of state (EOS) of supernuclear matter. These microphysical models will be used in new studies of the structure and evolution of neutron stars. Of particular importance is the period immediately following a neutron star's birth, during which neutrinos dominate the evolution, and the longer term cooling after a few decades, during which UV and X-ray emission dominates. By comparing predicted and observed emissions in both neutrinos and photons we hope to deduce definitive information concerning the composition of matter inside neutron stars. One of the most important questions we address concerns whether or not strange matter exists in neutron stars. During this first year, our research has focused upon the microphysics of the neutrino opacities and the EOS of dense neutron star matter, and their roles in determining the neutrino emission from newly formed neutron stars. We view it as essential that opacities be consistent with the composition, which has not been a feature of protoneutron star models to date. This report summarizes the contents of the papers listed in the publication list (attached) for this year.
Lattimer James M.
Prakash Madappa
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