Three flares of the penultimate M-class occurred on the Sun.
This happened, as reported by a correspondent for the online publication Belnovosti, on the night of Thursday, October 16.
The Institute of Applied Geophysics told TASS about this.
According to scientists, the first flare, designated M2.7, was recorded on October 16 at 1:28 AM Moscow time. It lasted 51 minutes.
Then, at 2:45 a.m., instruments detected a new M2.4 flare. It was shorter, lasting 15 minutes.
The series ended at 3:21 with the M1.1 flare, which was the shortest yet, lasting only 7 minutes.
All three of these events occurred in the same sunspot group.
As a reminder, astronomers classify solar flares into five types – A, B, C, M, and X – depending on how powerful their X-ray emission is.
The minimum class A0.0 corresponds to a radiation power in Earth orbit of 10 nanowatts per “square”.
Each subsequent class in this series means that the flash power has increased by 10 times compared to the previous one.
Such flares are often accompanied by ejections of matter from the solar corona, and when these plasma clouds reach our planet, they can cause magnetic storms.
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