Chromospheric Sources of Coronal Rays

Details Chromospheric Sources of Coronal Rays Chromospheric Sources of Coronal Rays

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.7808z&link_type=abstract

American Astronomical Society, 194th AAS Meeting, #78.08; Bulletin of the American Astronomical Society, Vol. 31, p.962

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Scientific paper

TRACE images in the 171A FeIX line show coronal rays or small streamers from network elements. We obtained chromospheric images in center and wing of Hα at BBSO to investigate the relation of these to spicule activity at the base, as well as to brightenings and other changes in the underlying chromosphere. There is a close match of the brightest Hα centerline elements to coronal rays; other network elements are seen. Spicule activity does not appear to play a big role. The coronal changes are fairly slow. We shall also present new data on spicule lifetimes.

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