The Landau level-superfluid modified factor and the overal soft X/ γ-ray efficiency coefficient of a magnetar

Details The Landau level-superfluid modified factor and the overal soft X/ γ-ray efficiency coefficient of a magnetar The Landau level-superfluid modified factor and the overal soft X/ γ-ray efficiency coefficient of a magnetar

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ap%26ss.336..427g&link_type=abstract

Astrophysics and Space Science, Volume 336, Issue 2, pp.427-439

Astronomy and Astrophysics

Astrophysics

Magnetar, Landau Levels, Electron Capture, Neutron Star, Fermi Energy

Scientific paper

As soon as the energies of electrons near the Fermi surface exceed Q, the threshold energy of inverse β-decay, electron capture (EC) dominates inside a neutron star. The high-energy neutrons released by EC will destroy anisotropic 3 P 2 neutron Cooper pairs in the degenerate superfluid. By colliding with the neutrons produced in the process n+( n↑ n↓)→ n+ n+ n, the kinetic energies of the neutrons released by EC will be transformed into thermal energy. A portion of this thermal energy will be transported from the star interior to the star surface by conduction, then converted to a thermal spectrum of soft X-rays and γ-rays. By introducing two important parameters: the Landau level-superfluid modified factor and the overal soft X/ γ-ray efficiency coefficient, we compute the theoretical luminosity L X of a magnetar under our model and plot a diagram of L X as a function of magnetic field strength B. Numerical calculations based on our model agree well with the observed properties of magnetar candidates.

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