Models of strange stars having a crust

Details Models of strange stars having a crust Models of strange stars having a crust

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ap.....42..330v&link_type=abstract

Astrophysics, Volume 42, Issue 3, pp.330-337

Astronomy and Astrophysics

Astrophysics

Scientific paper

Models of strange quark stars with a crust consisting of atomic nuclei and degenerate electrons, maintained by an electrostatic barrier at the surface of the strange quark matter, are investigated for a realistic range of parameters of the MIT bag model. The density at which neutrons escape from nuclei, ρ = ρdrip, is taken as the maximum possible boundary density of the crust. Series of strange stars are calculated as a function of central density. Configurations with masses of 1.44 and 1.77 M{ie 330-1} and a gravitational redshift Zs = 0.23, corresponding to the best-known observational data, are investigated. The presence of a crust results in the existence of a minimum mass for strange stars, and also helps to explain the glitch phenomenon of pulsars within the framework of the existence of strange quark matter.

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