Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.296..401f&link_type=abstract
In ESA, The 23rd ESLAB Symposium on Two Topics in X Ray Astronomy. Volume 1: X Ray Binaries p 401-404 (SEE N90-25711 19-89)
Astronomy and Astrophysics
Astronomy
Halos, Monte Carlo Method, Shock Layers, Stellar Models, X Ray Binaries, X Ray Spectra, Cylindrical Shells, Emission Spectra, Iron, Shock Fronts, Shock Waves, Stellar Mass Accretion, Thomson Scattering
Scientific paper
A model of the X-ray radiation emitted from the accretion column of a compact object in AM Herculis binaries, using Monte Carlo methods is presented. The accretion column in the model has cylindrical symmetry. Above a shocked region in the column there is a preheated region and above it a cool region. Surrounding the three accretion column regions is a cool halo region. Comparing the results with AM Her spectrum from other investigations it is found that: if a halo exists, it is very thin (or has a very low density); the logarithm of the number density is approximately equal to 16.3 and a transverse Thomson optical depth approximately equal to 0.6; the width of the iron line peak obtained is approximately equal to 0.8 keV and insensitive to the transverse Thomson optical depth.
Felsteiner Joshua
Opher Reuven
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