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The Fe XXII I(11.92 Å)/I(11.77 Å) Density Diagnostic
Published online by Cambridge University Press: 12 April 2016
Abstract
Using the Livermore X-ray Spectral Synthesizer, which calculates spectral models of highly charged ions based on HULLAC atomic data, we investigate the temperature, density, and photoexcitation dependence of the I(11.92 Å)/I(11.77 Å) line ratio of Fe XXII. Applied to the Chandra HETG spectrum of the intermediate polar EX Hya, we find that the electron density of its Te ≈ 12 MK plasma is orders of magnitude greater than that observed in the Sun or other late-type stars.
- Type
- Part 3. A. Accretion Plasma diagnostics - Observations
- Information
- International Astronomical Union Colloquium , Volume 190: Magnetic Cataclysmic Variables , 2004 , pp. 124 - 127
- Copyright
- Copyright © Astronomical Society of the Pacific 2004
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