Element Abundances in the Upper Atmospheres of the Sun and Stars: Update of Observational Results

By U. Feldman, J. Laming. 2000

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View Paper: https://www.semanticscholar.org/paper/601814bef5853ef7daf8794d20b777404432dcc1

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In Astronomy and Astrophysics

Citations in the corpus

An Observational Overview of Solar Flares (2011, background): “Both are based on a coronal Fe/H abundance ratio of 1.26×10−4 (Feldman & Laming 2000), or 4 times the photospheric value.”
A NEW APPROACH TO ANALYZING SOLAR CORONAL SPECTRA AND UPDATED COLLISIONAL IONIZATION EQUILIBRIUM CALCULATIONS. II. UPDATED IONIZATION RATE COEFFICIENTS (2008, background): “Elements with a FIP of below ∼ 10 eV appear to have a coronal abundance that is enhanced by a fac- tor of a few over their photospheric abundance (see, e.g., the review by Feldman & Laming 2000).”
The FIP and Inverse FIP Effects in Solar and Stellar Coronae (2015, background): “As mentioned above, the observation of element abundances in the solar corona and wind has a history spanning decades, and has been reviewed several times during that period (Meyer, 1985a,b; Feldman, 1992; Feldman and Laming, 2000; Feldman and Widing, 2002, 2003, 2007).”
A Unified Picture of the First Ionization Potential and Inverse First Ionization Potential Effects (2004, background): “Feldman & Laming (2000) reviewed the observational situation prior to the launch of Chandra and XMM-Newton.”
Coronal Holes and the High-Speed Solar Wind (2002, background): “This FIP effect is typically a factor of 3 to 4 in the slow solar wind and only of order 1.5 in the fast solar wind (see recent reviews by Raymond 1999; Feldman and Laming 2000).”
Updated Expressions for Determining Temperatures and Emission Measures from Goes Soft X-Ray Measurements (2005, background): “However, a concensus seems to have emerged that high–FIP elements have the same absolute abundance in the corona as in the photosphere, while the low–FIP elements are enhanced in the corona by a factor of order 4 (Feldman, 1992; Feldman and Laming, 2000; White et al., 2000).”