Statistics – Computation
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...248..481i&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 248, no. 2, Aug. 1991, p. 481-484.
Statistics
Computation
6
Bosons, Degenerate Matter, Fermions, Gravitational Effects, Neutron Stars, Nuclear Astrophysics, Computational Astrophysics, Gravitational Fields, Newton Theory, Relativistic Effects
Scientific paper
Self-gravitating systems made of a mixture of condensed bosons and degenerate ferions in the Newtonian regime are examined. A numerical approach is developed to determine the relevant quantities of the equilibrium configurations. An analytical treatment is also obtained in the limits in which the central density of one component is dominant. For the case in which the fermions are neutrons and the boson mass is greater than 10 exp 7 eV/c, it is found that: (1) for those configurations in which the central density of fermions dominates, the gravitational field confines the boson component to a region smaller than that occupied by the corresponding pure boson configuration. The size of such a region is independent of the boson number and relates to the fermion density; (2) both in the cases of a boson density smaller or larger than the fermion density, the bosons do not perturb significantly the fermions, which distribute according to the usual solution of Chandrasekhar (1939).
Grasso Dario
Ingrosso Gabriele
Ruffini Remo
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