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The Distribution of Sunspot Decay Rates
Published online by Cambridge University Press: 12 April 2016
Abstract
The distribution of sunspot decay rates is studied using the Greenwich Photoheliographic Results (GPR). The decay rates are seen to be lognormally distributed. An analysis of the lognormal distributions associated to each sunspot group type and for isolated spots is presented. As a remarkable property of the decay process, we show that it happens at a constant total to umbral area ratio.
- Type
- Session 1. Structure of Active Regions
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- Copyright © Astronomical Society of the Pacific 1993
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