Oscillations in G-band and Ca II H wing in the active region NOAA AR10789. (Slovak Title: Oscilácie v G páse a Ca II H krídle v aktívnej oblasti NOAA AR10789)

Details Oscillations in G-band and Ca II H wing in the active region NOAA AR10789. (Slovak Title: Oscilácie v G páse a Ca II H krídle v aktívnej oblasti NOAA AR10789) Oscillations in G-band and Ca II H wing in the active region NOAA AR10789. (Slovak Title: Oscilácie v G páse a Ca II H krídle v aktívnej oblasti NOAA AR10789)

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010nspm.conf...24k&link_type=abstract

Proceedings of the 20th National Solar Physics Meeting, held 31 May - 4 June, 2010 in Papradno, Slovakia, p. 22-24

Physics

Scientific paper

Variations of the area of a sunspot in G-band and in Ca II H line wing were analyzed based on observations obtained on 13 July, 2005 by DOT Telescope (La Palma, Canary Islands, Spain) in the active region NOAA 10789. Change of the area at the threshold value of 0.4 was analyzed using wavelet transform in order to determine the significance of the derived periods. Because of the different time dependence of the period distributions in these two spectral regions coherence between the two time series of observations was investigated.

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