Fermion-fermion stars.

Details Fermion-fermion stars. Fermion-fermion stars.

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cotph..32..457j&link_type=abstract

Commun. Theor. Phys., Vol. 32, No. 3, p. 457 - 462

Physics

1

Gravitational Redshift: Boson Stars, Dark Matter: Compact Objects

Scientific paper

The fermion-fermion stars, i.e., the dark matter self-gravitating systems made from two kinds of fermions with different masses, are considered. The authors review the stability of the systems, present a comparison between the maxima of gravitational redshift for fermion stars, compact stars, Bondi stars, boson stars and fermion-fermion stars, and then investigate rotation curves of fermion-fermion stars (two-component concentric spheres) which might be polytropic dark matter halos of galaxies. Results show that the fermion-fermion stars would give rotation curves with a flat part at large radii. This presents a striking contrast with the rotation curve of a single component fermion star which has no flat parts.

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