The first active region of the solar cycle 25 was observed on December 20, 2016. The minimum activity period between solar cycle 24 and the current cycle was approximately double compared to other similar periods.
After almost 4 years, solar cycle 25 is picking up pace!
The active region NOAA 12776 became visible on October 15 and passed the western solar limb on October 27. In the right-hand side image this region is observed by the Bucharest Observatory on October 21 when it was situated at 14° southern latitude and 45° western longitude. On October 24, a B2.3 class flare initiated from this region was recorded by GOES.
Between October 27 and November 2 another active region (NOAA 12778) was visible on the Sun and generated several C-class flares.
The solar activity as seen in the sunspot number, the number and intensity of flares, as well as other eruptive phenomena, will constantly increase over the next few years.
Today we can see two active regions on the Sun and the sunspot number is 21.
Published on: Nov 05, 2020