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Some Peculiarities of Intensity Oscillations in Ca ii Lines under Coronal Holes

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Abstract

Observations of the central intensity of the Ca ii K and 849.8 nm lines are used to derive the ratios of the oscillation power in the frequency ranges of the “five-minute” (W 5) and “three-minute” (W 3) oscillations. It is shown that at high significance level ratios, (W 5/W 3) >1 at coronal hole bases, and W 5/W 3 ≈1 in quiet chromospheric areas far from holes.

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Authors and Affiliations

  1. Institute of Solar – Terrestrial Physics, Russian Academy of Sciences, Siberian Branch, P.O. Box 291, Irkutsk, 664033, Russia

    R. B. Teplitskaya, I. P. Turova & O. A. Ozhogina

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  1. R. B. Teplitskaya
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  2. I. P. Turova
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  3. O. A. Ozhogina
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Correspondence to I. P. Turova.

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Teplitskaya, R.B., Turova, I.P. & Ozhogina, O.A. Some Peculiarities of Intensity Oscillations in Ca ii Lines under Coronal Holes. Sol Phys 262, 53–59 (2010). https://doi.org/10.1007/s11207-009-9503-x

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  • DOI: https://doi.org/10.1007/s11207-009-9503-x

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