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

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

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010soph..262...53t&link_type=abstract

Solar Physics, Volume 262, Issue 1, pp.53-59

Physics

1

Chromosphere, Oscillations, Coronal Holes

Scientific paper

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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