Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...265..393b&link_type=abstract
Astrophysical Journal, Part 1, vol. 265, Feb. 1, 1983, p. 393-401. Research supported by the University of California
Astronomy and Astrophysics
Astrophysics
23
Eddington Approximation, Neutron Stars, Radiative Transfer, Stellar Mass Accretion, Supercritical Flow, X Ray Sources, Binary Stars, Hydrogen Plasma, Magnetohydrodynamic Flow, Radiation Pressure, Stellar Envelopes, Stellar Luminosity, Time Dependence
Scientific paper
Spherically symmetric, time-dependent accretion of an ionized hydrogen plasma onto a neutron star is calculated for accretion rates in excess of the Eddington limit. The coupled oxygen hydrodynamic and frequency integrated radiative transfer equations are solved on an Eulerian grid for these supercritical accretion flows. The results indicate that steady flows are limited to rates at or below the critical rate, with emergent luminosities equal to or less than the Eddington luminosity. Initially supercritical accretion rates generate a large pulse of radiation which reduces the accretion rate to the critical value and produces an extended quasi-static envelope.
Burger H. L.
Katz Jonathan I.
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