Abstract
view Abstract Citations (25) References (47) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Models of the hard X-ray spectrum of AM Herculis and implications forthe accretion rate. Swank, J. H. ; Fabian, A. C. ; Ross, R. R. Abstract Phenomenological fits to the hard X-ray spectrum of AM Hercules have failed to explain the high equivalent width (0.8 + or - 0.1 keV) of Fe K-alpha emission. The scattering and fluorescent line production in a cold or partially ionized accretion column of hard X-rays emitted at the base are investigated using the Monte Carlo method. It is shown that the Fe emission equivalent width observed in the spectrum of AM Her can be explained without resorting to an overabundance of Fe in the accreting material. For sufficient optical depth across the accretion column, equivalent widths of K-alpha emission even larger than the observed values can be obtained. The accretion rate and gravitational power can be deduced from the optical depth across the column, if the column size is known, and, together with the observed hard X-ray and polarized light luminosities, imply a lower limit for the luminosity in the UV to soft X-ray range, for which the observations give model-dependent values. Publication: The Astrophysical Journal Pub Date: May 1984 DOI: 10.1086/162046 Bibcode: 1984ApJ...280..734S Keywords: Binary Stars; K Lines; Stellar Mass Accretion; White Dwarf Stars; X Ray Spectra; Albedo; Bremsstrahlung; Cyclotron Radiation; Monte Carlo Method; Optical Polarization; Stellar Luminosity; Astrophysics full text sources ADS | data products SIMBAD (2)
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
