Abstract
We have studied the time-dependent behaviour of the Hei 10830 Å line. These studies show that (i) the fluctuations of the line width are uncorrelated with the equivalent-width fluctuations and (ii) 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 Hei 10830 Å line.
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Singh, J., Jain, S.K. & Venkatakrishnan, P. Time variability of the Hei 10830 Å line profile. Sol Phys 150, 49–59 (1994). https://doi.org/10.1007/BF00712875
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DOI: https://doi.org/10.1007/BF00712875