Currently, the sun spot is almost three times the size of Earth. In the near future, it may send out flares that would have the “strength” of the middle class (M class).
International Space Weather Forecasting Centerwhich, among others monitors solar flares, has not issued any warnings recently.
During last spring, the Sun was particularly active, which was associated with the an increase in activity in an 11-year cycle. Our star then sent out many flares of the middle and strongest class.
– Yesterday sun spot AR3038 was big. Today it is huge. The fast-growing stain doubled in size in just 24 hours, said Tony Phillips, author of SpaceWeather.com
The temperature difference between the sunspot and the surface The sun it is so large that you have the impression that the stains are black. The temperature of the spots ranges from 3,000 to 4,000 degrees Celsius, while the surface of the star is around 5,000 degrees Celsius.
The stain is characterized by a lower temperature and a strong magnetic field. They usually appear in pairs, with opposite magnetic polarity. Structures are typically about 1,000 km deeper than their surroundings.
W sunspots two areas can be distinguished, i.e. shade (umber) and penumbra, which differ in temperature (shade is cooler). Small structures without penumbra are sometimes called solar seasons.
The number of spots is related to the intensity of solar radiation – the more areas of this type on the Sun, the lower the radiation.
These structures are formed due to the decrease in the density of the solar plasma, which is related to the changes in the magnetic field, which they stop convection (hot plasma raising).
The number of stains that appear has been recorded since 1849.
Solar flare is it violent ejection of matterwhich releases enormous energy comparable to the explosion power of millions of atomic bombs.
These phenomena emit strong radiationthat may directly threaten the Earth by disrupting, among others, radio communication on our planet, or electricity supply. Flares often appear together with sunspots. They probably arise from the merging of the magnetic fields in these structures.
Flares can affect Earth’s magnetosphere and they can endanger space stations and satellites. Additionally, they may appear simultaneously coronal mass ejections (CME), which cause geomagnetic storms that can in turn damage the electricity grid.