Article ID Journal Published Year Pages File Type
1771724 Chinese Astronomy and Astrophysics 2014 10 Pages PDF
Abstract

The significant periods of total solar irradiance are 35 d and 26 d in the 23rd and 24th solar activity cycles, respectively. It is inferred that the solar quasi-rotation periods are also 35 d and 26 d in the 23rd and 24th solar activity cycles, respectively. The value of total solar irradiance around the 24th solar activity minimum may be close to the value of Maunder minimum. On the timescales from one solar rotation period to several months, sunspots are the main reason to cause the variation of total solar irradiance, but not the unique one, and the variation of total solar irradiance are not correlated with the Mg II index on the timescales from a few days to one solar rotation period.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Astronomy and Astrophysics