Simulating AXAF Grating Spectra of Accreting White Dwarfs

Publications of the Astronomical Society of Australia

Allyn F. Tennant¹ 

[1] Kinwah Wu

关键词: accretion;    stars: binaries: close;    stars: white dwarfs;    data analysis;   

DOI  :  10.1071/AS98339

学科分类：天文学(综合)

来源: CSIRO

【 摘 要 】

We present simulated AXAF spectra of accreting white dwarfs, using parameters appropriate for magnetic cataclysmic variables. The very high spectral resolution that can be obtained with the High-Energy Transmission Grating of AXAF can resolve the keV X-ray emission lines that characterise the temperature, density and velocity profiles of the shock-heated emission regions of these systems. These simulations demonstrate that actual spectra will allow us to place constraints on the white-dwarf mass and the accretion rate of the systems. The high-resolution spectra also allow the measurement of the velocity of the accretion flow in regions close to the white-dwarf surface.

【 授权许可】

Unknown