Small scale solar magnetic fields and their relation to various solar activity indices |
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| Authors: | Basil P Tritakis |
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| Institution: | (1) Research Center for Astronomy and Applied Mathematics, Academy of Athens, Athens, Greece |
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| Abstract: | Correlation studies between various solar activity indices and a long time series of annual sums of the maximum value of solar
magnetic field intensity, observed for each group of sunspots during each passage of it over the visible solar hemisphere,
have pointed out a couple of interesting points. First, the faculae have a significant contribution to the numerical representation
of the small scale solar magnetic coefficients and low standard errors of estimation to the above mentioned maximum values
of the solar magnetic field. These properties give to the area index an important physical meaning which is a first approximation
to the small scale solar magnetic fields expressed by the above-mentioned maximum values of it. Finally, the main point which
comes out is that long term studies of the solar magnetic fields, especially extrapolated studies to the past, could be supported
by photospheric indices of the solar activity.
This paper constitutes the expanded version of a report presented to theIAU Symposium No. 102 ‘Solar and Stellar magnetic fields: Origins and coronal effects’, held in Zürich 2–6 August, 1982. |
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