Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...227..987b&link_type=abstract
Astrophysical Journal, Part 1, vol. 227, Feb. 1, 1979, p. 987-994.
Astronomy and Astrophysics
Astrophysics
28
Flare Stars, Neutron Stars, Pulsars, Stellar Evolution, X Ray Sources, Astrophysics, Stellar Mass Accretion, Stellar Models, Stellar Rotation
Scientific paper
This paper considers some of the implications of a model of X-ray burst sources where bursts are caused by Kruskal-Schwarzschild instabilities at the magnetopause of an accreting and rotating neutron star. A number of simplifying assumptions are made in order to test the model using observed burst-energy histograms for the rapid burster MXB 1730-335. The predicted histograms have a correct general shape, but it appears that other effects are important as well, and that mode competition, for instance, may suppress the histograms at high burst energies. An explanation is ventured for the enhancement in the histogram at the highest burst energies, which produces the bimodal shape in high-accretion-rate histograms. Quantitative criteria are given for deciding when accreting neutron stars are steady sources or burst sources, and these criteria are tested using the X-ray pulsars.
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