2001/10/09 by Christopher W. Mauche, Mauche, Christopher W.
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics (astro-ph) #FOS: Physical sciences #Ionosphere and magnetosphere dynamics #Magnetic confinement fusion research #Solar and Space Plasma Dynamics #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0110224
9 pages including 6 encapsulated postscript figures; LaTeX format, uses newpasp.sty; to be published in "The Physics of Cataclysmic Variables and Related Objects," ed. B. T. Gansicke, K. Beuermann, and K. Reinsch (San Francisco: ASP)
arxiv created 2001/10/09 · openalex publication_date 2001/10/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Using the Chandra HETG spectrum of EX Hya as an example, we discuss some of\nthe plasma diagnostics available in high-resolution X-ray spectra of magnetic\ncataclysmic variables. Specifically, for conditions appropriate to collisional\nionization equilibrium plasmas, we discuss the temperature dependence of the H-\nto He-like line intensity ratios and the density and photoexcitation dependence\nof the He-like R line ratios and the Fe XVII I(17.10 A)/I(17.05 A) line ratio.\nWe show that the plasma temperature in EX Hya spans the range from ~ 0.5 to ~\n10 keV and that the plasma density n > 2E14 cm-3, orders of magnitude\ngreater than that observed in the Sun or other late-type stars.\n