Spectral features to be expected from rotational and expansional motions in fine solar structures

Details Spectral features to be expected from rotational and expansional motions in fine solar structures Spectral features to be expected from rotational and expansional motions in fine solar structures

Apr 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975soph...41..329r&link_type=abstract

Solar Physics, vol. 41, Apr. 1975, p. 329-348.

Physics

14

Solar Rotation, Solar Spectra, Spectral Signatures, Spectroheliographs, Fine Structure, H Alpha Line, Signature Analysis, Stellar Structure

Scientific paper

The shapes of spectral features (lines) to be expected from rotating or expanding fine solar filaments, loops, and knots (oriented variously to the spectrograph slit) are given and discussed. Only the appearance of the lines in the spectrum (i.e., their orientation to the direction of dispersion and the shape of their area) is considered. It is shown that the observed inclination to the direction of dispersion of some spectral features can be produced by rotation but not by expansion. The observational proofs of this conclusion are given.

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