Physics
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986stin...8715154y&link_type=abstract
Unknown
Physics
Bursts, Neutron Stars, Stellar Winds, X Ray Sources, Relativistic Effects, Stellar Atmospheres, Stellar Spectra
Scientific paper
Super-Eddington radiative fluxes generated in the helium burning shell of type-1 X-ray bursters are considered as the power source of radiation driven winds. Study of self-consistent radiation-hydrodynamic models of the atmospheres of bursting neutron stars shows that the bolometric flux from the wind is Eddington-limited, independently of the total energy release. The spectrum differs from a black body, and the color temperature is small, less than or = 1 keV, due to the contribution of the cooler parts of the wind. Atomic transitions in the partially ionized iron Fe(+25) are observed, although it is not clear whether their signature appears as absorption line. General-relativistic effects associated with radiation emission are important, since hard photons (of few keV) are produced close to the initial stellar radius.
Braun Alexander
Brinkmann Wolfgang
Yahel R. Z.
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