Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...176..223y&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 176, no. 2, April 1987, p. 223-234. Research supported by the Minerva Gesellsc
Astronomy and Astrophysics
Astronomy
1
Neutron Stars, Radiation Effects, Stellar Models, Stellar Winds, Deflagration, Nonequilibrium Thermodynamics, Radiation Pressure, X Ray Astronomy
Scientific paper
The authors study optically thin hydrodynamic models of the atmospheres of bursting neutron stars. It is found that the bolometric flux from the wind is Eddington-limited, independently of the energy generation rates. The spectrum differs from a black-body, and the colour temperature is relatively small (≤1 keV) due to the contribution of the cooler parts of the wind. Atomic transitions in the partially ionized iron (Fe+25) may be observed. General-relativistic effects associated with radiation emission are important. The authors discuss briefly conditions under which a high, super-Eddington power is generated in the nuclear burning region for significant time scale (i.e. few seconds). It is suggested that under certain circumstances, hydrogen burning is maintained by a slow deflagration front propagating into the stellar crust.
Braun Alexander
Brinkmann Wolfgang
Yahel R. Z.
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