Radiation Hydrodynamic Models of Eclipsing Low-Mass X-Ray Binaries

Details Radiation Hydrodynamic Models of Eclipsing Low-Mass X-Ray Binaries Radiation Hydrodynamic Models of Eclipsing Low-Mass X-Ray Binaries

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...454l.133m&link_type=abstract

Astrophysical Journal Letters v.454, p.L133

Astronomy and Astrophysics

Astronomy

3

Accretion, Accretion Disks, Stars: Binaries: Close, Stars: Binaries: Eclipsing, X-Rays: Stars

Scientific paper

We present the results of self-consistent two-dimensional radiation hydrodynamic models of winds and coronae above accretion disks in low-mass X-ray binaries. The numerical method combines adaptive mesh refinement for the hydrodynamics with combined ray tracking/flux-limited diffusion for the radiation. The results of the models are compared with EXOSAT observations of X1822-371 and 2S 0921-630, two eclipsing systems that are ideal for direct tests of coronal structure. Excellent fits to the eclipses by the companion star are found for models with intrinsic system luminosities ~0.1LEdd. Estimates are made of the equivalent width of the Fe K alpha emission, and values in the range 50--200 eV are found, comparable to estimates from recent observations.

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