Elemental Abundances and Post – Coronal Mass Ejection Current Sheet in a Very Hot Active Region


A peculiar young active region was observed in 1998 March with the Ultraviolet Coronagraph Spectrometer (UVCS) over the southwest limb. The spectra showed strong emission in the 974 line of fluorine-like iron, [Fe xviii], which is brightest at an electron temperature of 106.8 K, and lines of Ne ix, [Ca xiv], [Ca xv], Fe xvii, [Ni xiv], and [Ni xv]. It is… (More)

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