Models of X-ray bursters with radius expansion

Details Models of X-ray bursters with radius expansion Models of X-ray bursters with radius expansion

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...267..315p&link_type=abstract

Astrophysical Journal, Part 1, vol. 267, Apr. 1, 1983, p. 315-321.

Astronomy and Astrophysics

Astrophysics

111

Neutron Stars, Stellar Envelopes, Stellar Evolution, Stellar Models, Thermonuclear Reactions, X Ray Sources, Bursts, Electron Scattering, Gas Expansion, Helium Plasma, Stellar Luminosity, Stellar Mass Accretion, Stellar Temperature

Scientific paper

A series of models of helium shell flashes on a neutron star is presented. To make models simple, no hydrogen was present and a small nuclear reaction network was used. General relativity was fully taken into account. Variation of electron scattering opacity with temperature and density was allowed for, and it was most essential for producing hydrostatic expansion of the outer layers of models. The models which expanded had relatively large helium envelope masses, developed strong shell flashes, and displayed a double peak variation of surface temperature with time. They may help to understand some X-ray bursters.

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