Models of photospheres of X-ray bursters near the Eddington limit

Details Models of photospheres of X-ray bursters near the Eddington limit Models of photospheres of X-ray bursters near the Eddington limit

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991azh....68..999z&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 68, Sept.-Oct. 1991, p. 999-1008. In Russian.

Statistics

Computation

4

Neutron Stars, Photosphere, Stellar Models, X Ray Stars, Approximation, Stellar Luminosity, X Ray Spectra

Scientific paper

Computations of neutron-star-photosphere models in the conditions typical of X-ray bursters with luminosities close to the Eddington limit are presented. It is shown that spectra of radiation flux emitted by the photosphere at luminosities not less than 0.95 L(Edd) are similar to those emitted by semiinfinite homogeneous plasmas with saturated Comptonization. Constraints are obtained on the photosphere parameters at which the layer is formed. An approach is outlined to improve the agreement between semianalytical approximations and computer simulations.

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