Time variability of the He I 10830 A line profile

Details Time variability of the He I 10830 A line profile Time variability of the He I 10830 A line profile

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994soph..150...49s&link_type=abstract

Solar Physics, vol. 150, no. 1-2, p. 49-59

Astronomy and Astrophysics

Astronomy

2

Helium, Infrared Astronomy, Infrared Spectra, Line Spectra, Solar Atmosphere, Solar Corona, Solar Spectra, Spectral Line Width, Spectrum Analysis, Spicules, Time Dependence, Ultraviolet Spectra, Cross Correlation, Magnetic Signatures, Plasma Density, Plasma Turbulence, Signal To Noise Ratios, Solar Rotation, Statistical Analysis, Time Series Analysis

Scientific paper

We have studied the time-dependent behavior of the He I 10830 A line. These studies show that (1) the fluctuations of the line width are uncorrelated with the equivalent-width fluctuations and (2) the autocorrelation curves for the equivalent-width fluctuations are broader than those for line-width fluctuations. These results could be interpreted as the signatures of the eruption of density inhomogeneities, like spicules, into the altitudes of formation of the He I 10830 A line.

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