Physics
Scientific paper
Sep 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.535...87d&link_type=abstract
In: Solar variability as an input to the Earth's environment. International Solar Cycle Studies (ISCS) Symposium, 23 - 28 June 2
Physics
Sun: Corona, Sun: Magnetic Fields
Scientific paper
The relation between the green corona and the photospheric magnetic flux has been analyzed over the period from 1995 to 2001. The homogeneous dataset of the green coronal line intensities and the Kitt Peak magnetic flux data were used for determining this relation. Focus was on the solar cycle dependence of the numerical relation between these two parameters has been investigated. Any overall fit with fixed parameters for the period of several years was shown to be unrealistic for describing this relation because the fit was found to be time dependent. The coefficients of the linear fit used in the paper show quite significant changes in their values with time. Moreover, the inverse relation of the absolute and the linear co-efficients of the fit was obtained during the ascending phase of the solar cycle between 1998 and 2001. Therefore, in order to extrapolate magnetic flux data before 1975 using the existing longer datasets of the green coronal intensities, it is necessary to take into account the revealed solar cycle dependence of their relation and to estimate the quantitative parameters of the relation separately for the individual phases of the solar cycle.
Dorotovič Ivan
Rybák Ján
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