Surface structure of neutron stars with high magnetic fields

Details Surface structure of neutron stars with high magnetic fields Surface structure of neutron stars with high magnetic fields

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...342..958f&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 342, July 15, 1989, p. 958-975.

Physics

Condensed Matter

61

Condensed Matter Physics, Magnetic Stars, Neutron Stars, Stellar Magnetic Fields, Stellar Structure, Thomas-Fermi Model, Density (Mass/Volume), Density Distribution, Equations Of State, Nuclear Reactions

Scientific paper

The equation of state of cold dense matter in strong magnetic fields is calculated in the Thomas-Fermi and Thomas-Fermi-Dirac approximations. For use in the latter calculation, a new expression is derived for the exchange energy of the uniform electron gas in a strong magnetic field. Detailed calculations of the density profile in the surface region of a neutron star are described for a variety of equations of state, and these show that the surface density profile is strongly affected by the magnetic field, irrespective of whether or not matter in a magnetic field has a condensed state bound with respect to isolated atoms. It is also shown that, as a consequence of the field dependence of the screening potential, magnetic fields can significantly increase nuclear reaction rates.

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