X-ray Spectroscopy of Cataclysmic Variables

Details X-ray Spectroscopy of Cataclysmic Variables X-ray Spectroscopy of Cataclysmic Variables

2001-12-03

arxiv.org/abs/astro-ph/0112048v1

Astronomy and Astrophysics

Astrophysics

10 pages, including 7 figures; invited talk presented at COSPAR Scientific Assembly in Warsaw, July 2000, to appear in Advance

Scientific paper

In cataclysmic variables (CVs), accretion onto white dwarfs produces high temperature, high density plasmas. They cool down from kT~10 keV via bremsstrahlung continuum and K and L shell line emissions. The small volume around white dwarfs means that the plasma densities are much higher than in, e.g., stellar coronae, probably beyond the range well-described by existing models. I will describe potential diagnostics of the temperatures, the densities, and the optical depths of X-ray emitting plasmas in CVs, and present the recent Chandra grating spectra of the magnetic CV V1223 Sgr as an example.

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