Theory of superdense matter and degenerate stellar configurations

Details Theory of superdense matter and degenerate stellar configurations Theory of superdense matter and degenerate stellar configurations

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..95..305g&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 95, no. 2, Sept. 1983, p. 305-356.

Astronomy and Astrophysics

Astrophysics

36

Equations Of State, Neutron Stars, Plasma Density, Stellar Evolution, Supermassive Stars, Thermodynamic Properties, Degenerate Matter, Ground State, Heavy Nuclei, Metastable State, Pions, Stellar Magnetic Fields

Scientific paper

During the last two decades, the theory of degenerate stellar configurations has been deeloped in works by Ambartsumian and Sahakian (1960, etc), as well as in some other papers. This article is further progress in this direction. Systematic investigations of thermodynamic properties of the ground and metastable states of degenerate plasma have been carried out over the total range of pressures. It was found that in the range of densities between 3 x 10 to the 10th and 3 x 10 to the 14th G cu cm. there exists a 'pionization' effect which plays an important role in the thermodynamics of degenerate plasmas. The pion condensate present in nuclear matter promotes the existence of metastable nuclear clusters with the nuclear number A much greater than one million. The equation of state of degenerate stellar matter has been notably revised and, accordingly, the neutron star parameters have been calculated anew. The role of the pion condensate in generating strong magnetic fields observed in the pulsars is discussed.

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