Violent explosions on Sun: the sunspot AR3654 is producing several flares solar class M. The eruptions are “directed towards Earth are causing shortwave radio blackouts at frequencies below 20 MHz,” reports the specialized website SpaceWeather.com. The most recent flare, an event of class M3 occurred at 03:11 Italian time, “it disrupted shortwave transmissions across much of the Pacific Ocean“.
What are sunspots
The staines solar they are temporary areas on the Sun’s surface that appear darker than the surrounding region. They are caused by intense magnetic interactions within the Sun. These interactions are related to the cycle solarwhich lasts about 11 years and consists of a period of maximum solar activity followed by one of minimum activity.
Sunspots are caused by magnetic fluxes emerging through the solar photosphere. These flows interfere with the normal convection of the solar plasma, reducing the temperature and brightness of the area, making it visible as a darker spot. Sunspots are generally associated with regions of intense magnetic activity, where solar flares and coronal mass ejections (CMEs) can occur.
Sunspots are important for understanding the solar cycle and studying the Sun’s magnetic activity. They can affect space weather, causing interference in communications and satellite navigation systems.
Explosions on the Sun: what is a solar flare
THE flares solaralso known as flareI am violent explosions on the surface of the Sun, characterized by a sudden release of energy. These events occur in the active regions of the Sun, where the magnetic field is intense and complex. During a solar flare, stored magnetic energy is rapidly released, generating a burst of electromagnetic radiation in various wavelengths, including X-rays and gamma rays.
The main cause of solar flares is the reorganization of the solar magnetic field. This can happen through a process of magnetic reconnection, in which magnetic field lines rearrange and reconnect, releasing energy. Solar flares can vary in size and intensity, from small, localized events to giant flares involving large regions of the solar surface.
The effects of solar flares can be significant. They can cause the acceleration of charged particles to very high speeds, which can reach Earth and cause interference in communications, disturbances in satellite navigation systems and even damage the satellites themselves.
Continue reading on MeteoWeb
