Physics – Atomic Physics
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.253..107m&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 253, Nov. 1, 1991, p. 107-122.
Physics
Atomic Physics
33
Atomic Physics, Neutron Stars, Stellar Magnetic Fields, Atomic Energy Levels, Computational Astrophysics, Electron Transitions, Hartree Approximation, Oscillator Strengths, Wave Functions
Scientific paper
The energy levels, wavefunctions, and transition rates of hydrogen, helium, carbon, nitrogen, and silicon in the very strong magnetic fields expected in neutron stars are calculated. The wavefunctions are represented in terms of Landau states, and are calculated with a high-field multiconfigurational Hartree-Fock code. The present results for hydrogen are compared with previous work and the present wavefunctions are used to compute bound-bound and bound-free oscillator strengths for heavier elements. It is inferred from the low fluxes expected from neutron star thermal X-ray spectra (less than 10 exp -11 erg/sq cm s from thermal X-rays) that the appropriate wavefunctions and energy levels need only be calculated with an accuracy of a few percent. Unlike other methods in the literature which give a higher accuracy for hydrogen, the present method can be readily extended, with calibrated accuracy, to elements of higher Z.
Miller Michael Coleman
Neuhauser Daniel
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